Re: Python Error

[Mayukh Chakraborty via Python-list]

 Thanks.
I updated the path and was able to launch python.exe for v3.8. I got rid of the 
other errors but now facing an error with 'pandas' although  it is installed ok 
and the path correctly updated.
C:\Users\mchak>pythonPython 3.8.6 (tags/v3.8.6:db45529, Sep 23 2020, 15:52:53) 
[MSC v.1927 64 bit (AMD64)] on win32Type "help", "copyright", "credits" or 
"license" for more information.>>> import pandas as pdTraceback (most recent 
call last):  File "", line 1, in   File 
"C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\pandas\__init__.py",
 line 22, in     from pandas.compat.numpy import (ModuleNotFoundError: 
No module named 'pandas.compat.numpy'>>>
- Mayukh


On Tuesday, November 24, 2020, 09:27:00 PM GMT, Barry 
 wrote:  
 
 Two observations.

Python.exe is not on your PATH. But that does not matter as you can use the py 
command instead

And nymph may not be available for python 3.9 yet. Check on pypi to see if 
there is a build for 3.9.

Maybe use 3.8 for the time being.
Barry

> On 24 Nov 2020, at 11:18, Mayukh Chakraborty via Python-list 
>  wrote:
> 
>  Thanks - I am able to launch 'py' from the command prompt and it gives me 
> the python versions installed in my machine from python.org website.
> However, when I am trying to execute a python program from command prompt, I 
> am getting the error below. I had reinstalled python packages (numpy, pandas) 
> but it didn't resolve the issue. Any help would be appreciated.
> Original error was: No module named 'numpy.core._multiarray_umath'
> 
> ---
> C:\Users\mchak\Documents\Python>py ES.pyTraceback (most recent call last):  
> File 
> "C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\core\__init__.py",
>  line 22, in     from . import multiarray  File 
> "C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\core\multiarray.py",
>  line 12, in     from . import overrides  File 
> "C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\core\overrides.py",
>  line 7, in     from numpy.core._multiarray_umath import 
> (ModuleNotFoundError: No module named 'numpy.core._multiarray_umath'
> During handling of the above exception, another exception occurred:
> Traceback (most recent call last):  File 
> "C:\Users\mchak\Documents\Python\ES.py", line 1, in     import scipy 
> as sp  File 
> "C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\scipy\__init__.py",
>  line 61, in     from numpy import show_config as show_numpy_config  
> File 
> "C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\__init__.py",
>  line 140, in     from . import core  File 
> "C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\core\__init__.py",
>  line 48, in     raise ImportError(msg)ImportError:
> IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!
> Importing the numpy C-extensions failed. This error can happen formany 
> reasons, often due to issues with your setup or how NumPy wasinstalled.
> We have compiled some common reasons and troubleshooting tips at:
>    https://numpy.org/devdocs/user/troubleshooting-importerror.html
> Please note and check the following:
>  * The Python version is: Python3.9 from 
>"C:\Users\mchak\AppData\Local\Programs\Python\Python39\python.exe"  * The 
>NumPy version is: "1.19.4"
> and make sure that they are the versions you expect.Please carefully study 
> the documentation linked above for further help.
> Original error was: No module named 'numpy.core._multiarray_umath'
> 
>>    On Tuesday, November 24, 2020, 07:13:04 AM GMT, Gisle Vanem 
>> wrote:  
>> 
>> Barry Scott wrote:
>> 
>> If you have python from python.org installed you should be able to list all 
>> the version you have installed
>> with the command:
>> 
>>    py -0
> When was that '-0' feature added?
> I have Python 3.6 from Python.org and here a
> 'py.exe -0' gives:
>  Requested Python version (0) not installed
> 
> But using 'py.exe -0' from Python 3.9 correctly
> gives:
>  -3.6-32 *
>  -2.7-32
> 
> -- 
> --gv
> -- 
> https://mail.python.org/mailman/listinfo/python-list
> 
> -- 
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Re: Python Error

[Barry]

Two observations.

Python.exe is not on your PATH. But that does not matter as you can use the py 
command instead

And nymph may not be available for python 3.9 yet. Check on pypi to see if 
there is a build for 3.9.

Maybe use 3.8 for the time being.
Barry

> On 24 Nov 2020, at 11:18, Mayukh Chakraborty via Python-list 
>  wrote:
> 
>  Thanks - I am able to launch 'py' from the command prompt and it gives me 
> the python versions installed in my machine from python.org website.
> However, when I am trying to execute a python program from command prompt, I 
> am getting the error below. I had reinstalled python packages (numpy, pandas) 
> but it didn't resolve the issue. Any help would be appreciated.
> Original error was: No module named 'numpy.core._multiarray_umath'
> 
> ---
> C:\Users\mchak\Documents\Python>py ES.pyTraceback (most recent call last):  
> File 
> "C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\core\__init__.py",
>  line 22, in from . import multiarray  File 
> "C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\core\multiarray.py",
>  line 12, in from . import overrides  File 
> "C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\core\overrides.py",
>  line 7, in from numpy.core._multiarray_umath import 
> (ModuleNotFoundError: No module named 'numpy.core._multiarray_umath'
> During handling of the above exception, another exception occurred:
> Traceback (most recent call last):  File 
> "C:\Users\mchak\Documents\Python\ES.py", line 1, in import scipy 
> as sp  File 
> "C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\scipy\__init__.py",
>  line 61, in from numpy import show_config as show_numpy_config  
> File 
> "C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\__init__.py",
>  line 140, in from . import core  File 
> "C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\core\__init__.py",
>  line 48, in raise ImportError(msg)ImportError:
> IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!
> Importing the numpy C-extensions failed. This error can happen formany 
> reasons, often due to issues with your setup or how NumPy wasinstalled.
> We have compiled some common reasons and troubleshooting tips at:
> https://numpy.org/devdocs/user/troubleshooting-importerror.html
> Please note and check the following:
>   * The Python version is: Python3.9 from 
> "C:\Users\mchak\AppData\Local\Programs\Python\Python39\python.exe"  * The 
> NumPy version is: "1.19.4"
> and make sure that they are the versions you expect.Please carefully study 
> the documentation linked above for further help.
> Original error was: No module named 'numpy.core._multiarray_umath'
> 
>>On Tuesday, November 24, 2020, 07:13:04 AM GMT, Gisle Vanem 
>>  wrote:  
>> 
>> Barry Scott wrote:
>> 
>> If you have python from python.org installed you should be able to list all 
>> the version you have installed
>> with the command:
>> 
>> py -0
> When was that '-0' feature added?
> I have Python 3.6 from Python.org and here a
> 'py.exe -0' gives:
>   Requested Python version (0) not installed
> 
> But using 'py.exe -0' from Python 3.9 correctly
> gives:
>   -3.6-32 *
>   -2.7-32
> 
> -- 
> --gv
> -- 
> https://mail.python.org/mailman/listinfo/python-list
> 
> -- 
> https://mail.python.org/mailman/listinfo/python-list

-- 
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Re: Python Error

[Mayukh Chakraborty via Python-list]

 Thanks - I am able to launch 'py' from the command prompt and it gives me the 
python versions installed in my machine from python.org website.
However, when I am trying to execute a python program from command prompt, I am 
getting the error below. I had reinstalled python packages (numpy, pandas) but 
it didn't resolve the issue. Any help would be appreciated.
Original error was: No module named 'numpy.core._multiarray_umath'

---
C:\Users\mchak\Documents\Python>py ES.pyTraceback (most recent call last):  
File 
"C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\core\__init__.py",
 line 22, in     from . import multiarray  File 
"C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\core\multiarray.py",
 line 12, in     from . import overrides  File 
"C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\core\overrides.py",
 line 7, in     from numpy.core._multiarray_umath import 
(ModuleNotFoundError: No module named 'numpy.core._multiarray_umath'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):  File 
"C:\Users\mchak\Documents\Python\ES.py", line 1, in     import scipy as 
sp  File 
"C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\scipy\__init__.py",
 line 61, in     from numpy import show_config as show_numpy_config  
File 
"C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\__init__.py",
 line 140, in     from . import core  File 
"C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\core\__init__.py",
 line 48, in     raise ImportError(msg)ImportError:
IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!
Importing the numpy C-extensions failed. This error can happen formany reasons, 
often due to issues with your setup or how NumPy wasinstalled.
We have compiled some common reasons and troubleshooting tips at:
    https://numpy.org/devdocs/user/troubleshooting-importerror.html
Please note and check the following:
  * The Python version is: Python3.9 from 
"C:\Users\mchak\AppData\Local\Programs\Python\Python39\python.exe"  * The NumPy 
version is: "1.19.4"
and make sure that they are the versions you expect.Please carefully study the 
documentation linked above for further help.
Original error was: No module named 'numpy.core._multiarray_umath'

On Tuesday, November 24, 2020, 07:13:04 AM GMT, Gisle Vanem 
 wrote:  
 
 Barry Scott wrote:

> If you have python from python.org installed you should be able to list all 
> the version you have installed
> with the command:
> 
>    py -0
When was that '-0' feature added?
I have Python 3.6 from Python.org and here a
'py.exe -0' gives:
  Requested Python version (0) not installed

But using 'py.exe -0' from Python 3.9 correctly
gives:
  -3.6-32 *
  -2.7-32

-- 
--gv
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Re: Python Error

[Gisle Vanem]

Barry Scott wrote:


If you have python from python.org installed you should be able to list all the 
version you have installed
with the command:

   py -0

When was that '-0' feature added?
I have Python 3.6 from Python.org and here a
'py.exe -0' gives:
  Requested Python version (0) not installed

But using 'py.exe -0' from Python 3.9 correctly
gives:
  -3.6-32 *
  -2.7-32

--
--gv
--
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Re: Python Error

[Mayukh Chakraborty via Python-list]

 Hi,
I have solved the issue by updating the Environment variables, now I am able to 
launch 'py' from the command prompt. However, I can't launch 'python' from 
command prompt. I am also encountering an issue when I try to execute the 
'python' command from command prompt.
I had reinstalled the python packages (numpy, pandas, scipy etc) but I can't 
find a solution for this error.
---
C:\Users\mchak\Documents\Python>py ES.pyTraceback (most recent call last):  
File 
"C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\core\__init__.py",
 line 22, in     from . import multiarray  File 
"C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\core\multiarray.py",
 line 12, in     from . import overrides  File 
"C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\core\overrides.py",
 line 7, in     from numpy.core._multiarray_umath import 
(ModuleNotFoundError: No module named 'numpy.core._multiarray_umath'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):  File 
"C:\Users\mchak\Documents\Python\ES.py", line 1, in     import scipy as 
sp  File 
"C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\scipy\__init__.py",
 line 61, in     from numpy import show_config as show_numpy_config  
File 
"C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\__init__.py",
 line 140, in     from . import core  File 
"C:\Users\mchak\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.8_qbz5n2kfra8p0\LocalCache\local-packages\Python38\site-packages\numpy\core\__init__.py",
 line 48, in     raise ImportError(msg)ImportError:
IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!
Importing the numpy C-extensions failed. This error can happen formany reasons, 
often due to issues with your setup or how NumPy wasinstalled.
We have compiled some common reasons and troubleshooting tips at:
    https://numpy.org/devdocs/user/troubleshooting-importerror.html
Please note and check the following:
  * The Python version is: Python3.9 from 
"C:\Users\mchak\AppData\Local\Programs\Python\Python39\python.exe"  * The NumPy 
version is: "1.19.4"
and make sure that they are the versions you expect.Please carefully study the 
documentation linked above for further help.
Original error was: No module named 'numpy.core._multiarray_umath'

Regards,MayukhOn Monday, November 23, 2020, 08:17:06 PM GMT, Mayukh 
Chakraborty via Python-list  wrote:  
 
  Hi Terry,
1. The command py doesn't work. It gives me the error below :
C:\Users\mchak>pyFatal Python error: init_sys_streams: can't initialize sys 
standard streamsPython runtime state: core initializedAttributeError: module 
'io' has no attribute 'open'
Current thread 0x8290 (most recent call first):

2. If I use py -0, I get two installed versions. However, if I try to uninstall 
from Control Panel, I see only 3.9 version
C:\Users\mchak>py -0Installed Pythons found by py Launcher for Windows -3.9-64 
* -3.8-64
3. I tried to uninstall v3.9 and reinstall but it didn't solve the issue.
Regards,Mayukh    On Monday, November 23, 2020, 06:34:43 PM GMT, Terry Reedy 
 wrote:  
 
 On 11/23/2020 9:10 AM, Mayukh Chakraborty via Python-list wrote:
> Hi,
> I had uninstalled and installed Python in Windows 10 but I am getting the 
> error below. Can you please help ?
> C:\Users\mchak>python
Fatal Python error: init_sys_streams: can't initialize sys standard streams
Python runtime state: core initialized
AttributeError: module 'io' has no attribute 'OpenWrapper'
Current thread 0x9d44 (most recent call first):

It is true that io has no OpenWrapper class.  The question is What is 
trying to use that?  What installer are you using?  I would 
(re)download the one from python.org.
-- 
Terry Jan Reedy

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Re: Python Error

[Mayukh Chakraborty via Python-list]

 Hi Terry,
1. The command py doesn't work. It gives me the error below :
C:\Users\mchak>pyFatal Python error: init_sys_streams: can't initialize sys 
standard streamsPython runtime state: core initializedAttributeError: module 
'io' has no attribute 'open'
Current thread 0x8290 (most recent call first):

2. If I use py -0, I get two installed versions. However, if I try to uninstall 
from Control Panel, I see only 3.9 version
C:\Users\mchak>py -0Installed Pythons found by py Launcher for Windows -3.9-64 
* -3.8-64
3. I tried to uninstall v3.9 and reinstall but it didn't solve the issue.
Regards,MayukhOn Monday, November 23, 2020, 06:34:43 PM GMT, Terry Reedy 
 wrote:  
 
 On 11/23/2020 9:10 AM, Mayukh Chakraborty via Python-list wrote:
> Hi,
> I had uninstalled and installed Python in Windows 10 but I am getting the 
> error below. Can you please help ?
> C:\Users\mchak>python
Fatal Python error: init_sys_streams: can't initialize sys standard streams
Python runtime state: core initialized
AttributeError: module 'io' has no attribute 'OpenWrapper'
Current thread 0x9d44 (most recent call first):

It is true that io has no OpenWrapper class.  The question is What is 
trying to use that?  What installer are you using?  I would 
(re)download the one from python.org.
-- 
Terry Jan Reedy

-- 
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-- 
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Re: Python Error

[Mayukh Chakraborty via Python-list]

 1. The command 'py' doesn't work. It gives me the error below :
C:\Users\mchak>pyFatal Python error: init_sys_streams: can't initialize sys 
standard streamsPython runtime state: core initializedAttributeError: module 
'io' has no attribute 'open'
Current thread 0x8290 (most recent call first):

2. If I use py -0, I get two installed versions. However, if I try to uninstall 
from Control Panel, I see only 3.9 version
C:\Users\mchak>py -0Installed Pythons found by py Launcher for Windows -3.9-64 
* -3.8-64
3. I tried to uninstall v3.9 and reinstall but it didn't solve the issue.
Regards,Mayukh
On Monday, November 23, 2020, 06:17:00 PM GMT, Barry Scott 
 wrote:  
 
 

> On 23 Nov 2020, at 14:10, Mayukh Chakraborty via Python-list 
>  wrote:
> 
> Hi,
> I had uninstalled and installed Python in Windows 10 but I am getting the 
> error below. Can you please help ?
> C:\Users\mchak>pythonFatal Python error: init_sys_streams: can't initialize 
> sys standard streamsPython runtime state: core initializedAttributeError: 
> module 'io' has no attribute 'OpenWrapper'
> Current thread 0x9d44 (most recent call first):
> Regards,Mayukh

Which version of python are you installing and where did you download it from?
Do you have more than one version of python installed?


Does the command:

  py

work?

If you have python from python.org installed you should be able to list all the 
version you have installed
with the command:

  py -0

That is zero not oh.

Barry




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> 
  
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Re: Python Error

[Terry Reedy]

On 11/23/2020 9:10 AM, Mayukh Chakraborty via Python-list wrote:

Hi,
I had uninstalled and installed Python in Windows 10 but I am getting the error 
below. Can you please help ?
C:\Users\mchak>python

Fatal Python error: init_sys_streams: can't initialize sys standard streams
Python runtime state: core initialized
AttributeError: module 'io' has no attribute 'OpenWrapper'
Current thread 0x9d44 (most recent call first):

It is true that io has no OpenWrapper class.  The question is What is 
trying to use that?   What installer are you using?  I would 
(re)download the one from python.org.

--
Terry Jan Reedy

--
https://mail.python.org/mailman/listinfo/python-list

Re: Python Error

[Barry Scott]

> On 23 Nov 2020, at 14:10, Mayukh Chakraborty via Python-list 
>  wrote:
> 
> Hi,
> I had uninstalled and installed Python in Windows 10 but I am getting the 
> error below. Can you please help ?
> C:\Users\mchak>pythonFatal Python error: init_sys_streams: can't initialize 
> sys standard streamsPython runtime state: core initializedAttributeError: 
> module 'io' has no attribute 'OpenWrapper'
> Current thread 0x9d44 (most recent call first):
> Regards,Mayukh

Which version of python are you installing and where did you download it from?
Do you have more than one version of python installed?


Does the command:

   py

work?

If you have python from python.org installed you should be able to list all the 
version you have installed
with the command:

  py -0

That is zero not oh.

Barry




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> 

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Re: Python error

[MRAB]

On 2020-04-02 19:09, J Conrado wrote:

Hi,

I have the version of python installed:
Python 3.7.6 and Python 3.8.1
If I type:
python
Python 3.7.6 (default, Jan  8 2020, 19:59:22)
[GCC 7.3.0] :: Anaconda, Inc. on linux
Type "help", "copyright", "credits" or "license" for more information.
  >>> import numpy

it is Ok, no error, but if I did:

python3.8

Python 3.8.1 (default, Jan 31 2020, 15:49:05)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-23)] on linux
Type "help", "copyright", "credits" or "license" for more information.
  >>> import numpy

Traceback (most recent call last):
    File "", line 1, in 
ModuleNotFoundError: No module named 'numpy'

Please,
I would like to know why in the python3.8 version I have this error.


Thanks,

It looks like you have the Anaconda distribution for Python 3.7 and the 
standard distribution for Python 3.8.

The standard distribution comes with only the standard library.

The Anaconda distribution comes with a lot of extra stuff, which 
includes numpy.

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Re: Python error

[Mirko via Python-list]

Am 02.04.2020 um 20:09 schrieb J Conrado:
> Hi,
> 
> I have the version of python installed:
> Python 3.7.6 and Python 3.8.1
> If I type:
> python
> Python 3.7.6 (default, Jan  8 2020, 19:59:22)
> [GCC 7.3.0] :: Anaconda, Inc. on linux
> Type "help", "copyright", "credits" or "license" for more information.
 import numpy
> 
> it is Ok, no error, but if I did:
> 
> python3.8
> 
> Python 3.8.1 (default, Jan 31 2020, 15:49:05)
> [GCC 4.4.7 20120313 (Red Hat 4.4.7-23)] on linux
> Type "help", "copyright", "credits" or "license" for more information.
 import numpy
> 
> Traceback (most recent call last):
>   File "", line 1, in 
> ModuleNotFoundError: No module named 'numpy'
> 
> Please,
> I would like to know why in the python3.8 version I have this error.


Because you installed numpy only for 3.7.6. All Python installations
have their own module paths, so you need to install numpy for 3.8.1
too. Do it with:

python3.8 -m pip install numpy
-- 
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Re: Python Error Still Occured on sklearn

[Maisarah]

Thank you.





Maisarah Binti Mohd Yusak


Certified CPRE-FL & CTFL

Software Tester, IT Team.



AVL Infotech (Malaysia) Sdn. Bhd.



 



L2-I-3, Enterprise - 4 , Technology Park Malaysia,
Bukit Jalil, Kuala Lumpur, Malaysia -57000
Mobile: +6016 507 3051
Mail: mailto:maisa...@avlinfotech.net

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 On Mon, 02 Dec 2019 17:30:24 +0800 Maisarah  
wrote 


Dear Admin,



I have install and upgrade Cython as well. 

I have modified and repaired and even update the library but error is still 
occurred:



C:\Windows\system32>pip install -U scikit-learn 

Collecting scikit-learn

  Using cached 
https://files.pythonhosted.org/packages/1e/ce/9d8c88e68af0a5b5c5d78d8d2b7bcadfd45e1d6afc863ccb9aee30765b06/scikit-learn-0.21.3.tar.gz

Requirement already satisfied, skipping upgrade: numpy>=1.11.0 in 
c:\users\user\appdata\local\programs\python\python38\lib\site-packages (from 
scikit-learn) (1.17.4)

Requirement already satisfied, skipping upgrade: scipy>=0.17.0 in 
c:\users\user\appdata\local\programs\python\python38\lib\site-packages (from 
scikit-learn) (1.3.3)

Requirement already satisfied, skipping upgrade: joblib>=0.11 in 
c:\users\user\appdata\local\programs\python\python38\lib\site-packages (from 
scikit-learn) (0.14.0)

Installing collected packages: scikit-learn

    Running setup.py install for scikit-learn ... error

    ERROR: Command errored out with exit status 1:

 command: 'c:\users\user\appdata\local\programs\python\python38\python.exe' 
-u -c 'import sys, setuptools, tokenize; sys.argv[0] = 
'"'"'C:\\Users\\user\\AppData\\Local\\Temp\\pip-install-caioz9bv\\scikit-learn\\setup.py'"'"';
 
__file__='"'"'C:\\Users\\user\\AppData\\Local\\Temp\\pip-install-caioz9bv\\scikit-learn\\setup.py'"'"';f=getattr(tokenize,
 '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', 
'"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install 
--record 
'C:\Users\user\AppData\Local\Temp\pip-record-o9y5q4bk\install-record.txt' 
--single-version-externally-managed --compile

 cwd: 
C:\Users\user\AppData\Local\Temp\pip-install-caioz9bv\scikit-learn\

    Complete output (44 lines):

    Partial import of sklearn during the build process.

    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying 
from distutils

    Traceback (most recent call last):

  File 
"c:\users\user\appdata\local\programs\python\python38\lib\site-packages\setuptools\msvc.py",
 line 489, in _find_latest_available_vc_ver

    return self.find_available_vc_vers()[-1]

    IndexError: list index out of range



    During handling of the above exception, another exception occurred:



    Traceback (most recent call last):

  File "", line 1, in 

  File 
"C:\Users\user\AppData\Local\Temp\pip-install-caioz9bv\scikit-learn\setup.py", 
line 290, in 

    setup_package()

  File 
"C:\Users\user\AppData\Local\Temp\pip-install-caioz9bv\scikit-learn\setup.py", 
line 286, in setup_package

    setup(**metadata)

  File 
"c:\users\user\appdata\local\programs\python\python38\lib\site-packages\numpy\distutils\core.py",
 line 137, in setup

    config = configuration()

  File 
"C:\Users\user\AppData\Local\Temp\pip-install-caioz9bv\scikit-learn\setup.py", 
line 174, in configuration

    config.add_subpackage('sklearn')

  File 
"c:\users\user\appdata\local\programs\python\python38\lib\site-packages\numpy\distutils\misc_util.py",
 line 1033, in add_subpackage

    config_list = self.get_subpackage(subpackage_name, subpackage_path,

  File 
"c:\users\user\appdata\local\programs\python\python38\lib\site-packages\numpy\distutils\misc_util.py",
 line 999, in get_subpackage

    config = self._get_configuration_from_setup_py(

  File 
"c:\users\user\appdata\local\programs\python\python38\lib\site-packages\numpy\distutils\misc_util.py",
 line 941, in _get_configuration_from_setup_py

    config = setup_module.configuration(*args)

  File "sklearn\setup.py", line 76, in configuration

    maybe_cythonize_extensions(top_path, config)

  File 
"C:\Users\user\AppData\Local\Temp\pip-install-caioz9bv\scikit-learn\sklearn\_build_utils\__init__.py",
 line 42, in maybe_cythonize_extensions

    with_openmp = check_openmp_support()

  File 
"C:\Users\user\AppData\Local\Temp\pip-install-caioz9bv\scikit-learn\sklearn\_build_utils\openmp_helpers.py",
 line 83, in check_openmp_support

    ccompiler.compile(['test_openmp.c'], output_dir='objects',

  File 
"c:\users\user\appdata\local\programs\python\python38\lib\distutils\_msvccompiler.py",
 line 360, in compile

    self.initialize()

  File 
"c:\users\user\appdata\local\programs\python\python38\lib\distutils\_msvccompiler.py",
 line 253, in initialize

    vc_env = _get_vc_env(plat_spec)

  File 

Re: Python Error

[Terry Reedy]

On 1/16/2017 12:32 AM, Girish Khasnis wrote:

Hi,


I am unable to install Python on my system. After installing Python I get
the below error when I try to open Python.

[image: Inline image 1]


Copy and paste the error message.  This is text only list.


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Re: Python Error message

[dieter]

GBANE FETIGUE  writes:
> ...
> I am running a python script to run some CURL commands, and return the 
> response which is the applicationId and the versionId. I was able to do it. 
> Now the versionId value supposed to be used on the second CURL as a value of 
> the applications key which is an array. but it doesn't work.I 'll post the 
> error after running the command as well as the script. It seems like I have 
> an error somewhere because the curl works manually if i run. 
>
> ec2-user@ip-172-31-21-77 playbooks]$ python mmc-uploader.py
> ...
> Final response...HTTP Status 415 -  class="
>  line">type Status reportmessage 
> description The server refused this request because 
> the request entity is in a format not supported by the reque
>  sted resource for the requested method.Apache 
> Tomcat/8.0.26

What you see here is *not* a Python error message but an
error message from the server you have contacted.
It tells you:
"The server refused this request because the request entity is in a format not 
supported by the requested resource for the requested method."

This means, that in constructing your request you made some error - regarding
the "format" (which may mean the "Content-Type") for
the request "entity" (which may mean the request body).

I would check the service description to find out about what
"format" is expected and what the term "entity" means.
Then I would check the "curl" documentation to find out how to meet
those expectations.

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Re: Python Error message

[Chris Angelico]

On Fri, Aug 5, 2016 at 5:36 AM, Terry Reedy  wrote:
> An example of the latter is when one writes code in Python to execute
> 'other' code.  (IDLE is one example.  It both executes user statements and
> evals user expressions.)  One needs "except BaseException:"  to isolate the
> interpreter from exceptions raised in the interpreted code. (It would be
> wrong for IDLE to stop because a user submitted code that raises, whether
> intentionally or accidentally)  A 'raise' that throws the exception into the
> interpreter is likely the worst thing to do.

This is a classic example of a "boundary location". Another extremely
common example is a web server: if an exception bubbles out of a
request handler function, the outer wrapper code should catch that,
log it, and send a 500 back to the client.

But none of this is what the OP is doing.

ChrisA
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Re: Python Error message

[Terry Reedy]

On 8/4/2016 12:19 PM, MRAB wrote:


In those rare occasions when you do write a bare except,


A bare "except:" is never needed and in my opinion, and that of others, 
one should never write one (except possibly for experimentation). Be 
explicit and write "except BaseException:" or "except Exception:", 
whichever one is the actual intent.


> you'd re-raise the exception afterwards:

As a general rule, this is wrong, just as this rule is wrong for other 
exception blocks.



try:
...
except:
print("'tis but a scratch!")
raise


This is right when one wants to do something *in addition to* the normal 
handling, such as log errors to a file, but is wrong when wants to do 
something *instead of* allowing the normal handling.


An example of the latter is when one writes code in Python to execute 
'other' code.  (IDLE is one example.  It both executes user statements 
and evals user expressions.)  One needs "except BaseException:"  to 
isolate the interpreter from exceptions raised in the interpreted code. 
(It would be wrong for IDLE to stop because a user submitted code that 
raises, whether intentionally or accidentally)  A 'raise' that throws 
the exception into the interpreter is likely the worst thing to do.


--
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Re: Python Error message

[Chris Angelico]

On Fri, Aug 5, 2016 at 2:09 AM, Igor Korot  wrote:
>> [1] There are exceptions to this rule, for experts. But if you need to ask
>> what they are, you're not ready to know
>
> But even the experts will never write such a code - you never know what 
> happens
> in a month. Server might throw some new exception, you may move on to
> a different project,
> etc, etc. ;-)

Yes, in those situations you don't write a bare except :) As Steven
said, there ARE legit uses; most of them fall under the description
"boundary location".

ChrisA
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Re: Python Error message

[MRAB]

On 2016-08-04 17:09, Igor Korot wrote:

Steven,

On Thu, Aug 4, 2016 at 11:56 AM, Steven D'Aprano
 wrote:

On Fri, 5 Aug 2016 01:31 am, GBANE FETIGUE wrote:


try:
  parsed_response = json.loads(response)
  deployid  = parsed_response[u'id']
  print "Your deployid is: " + deployid
except:
print 'Seems the named id  already exists!'



I'm not going to try to debug your code blindfolded with my hands tied
behind my back. Get rid of those "try...except" blocks so that you can see
what error is *actually* happening.

As you have it now, an error happens, somewhere. You don't know where the
error is, or what it is, but Python generates a nice exception showing all
the detail you need to debug.

But you catch that exception, throw it away, and then print a lie.

It is **not true** that the named ID already exists. That is not what the
error is, so why does your script tell a lie?

The output from the server might give you a clue:

"The server refused this request because the request entity is in a format
not supported by the requested resource for the requested method."


Never[1] use a bare "try...except". It is the worst thing you can do to a
Python script, making it almost impossible to debug.

https://realpython.com/blog/python/the-most-diabolical-python-antipattern/

Fix that problem first, get rid of the "try...except" and lying print
messages, and then either the bug will be obvious, or we can debug further.






[1] There are exceptions to this rule, for experts. But if you need to ask
what they are, you're not ready to know


But even the experts will never write such a code - you never know what happens
in a month. Server might throw some new exception, you may move on to
a different project,
etc, etc. ;-)

In those rare occasions when you do write a bare except, you'd re-raise 
the exception afterwards:


try:
...
except:
print("'tis but a scratch!")
raise


Thank you.



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Re: Python Error message

[MRAB]

On 2016-08-04 16:31, GBANE FETIGUE wrote:

Hi,
I am running a python script to run some CURL commands, and return the response 
which is the applicationId and the versionId. I was able to do it. Now the 
versionId value supposed to be used on the second CURL as a value of the 
applications key which is an array. but it doesn't work.I 'll post the error 
after running the command as well as the script. It seems like I have an error 
somewhere because the curl works manually if i run.


What do you put on the command line when you do it manually?


ec2-user@ip-172-31-21-77 playbooks]$ python mmc-uploader.py
  % Total% Received % Xferd  Average Speed   TimeTime Time  Current
 Dload  Upload   Total   SpentLeft  Speed
100  23180   119  100  2199496   9173 --:--:-- --:--:-- --:--:--  9200
Your applicationId is: local$fc9277b0-a5b1-4602-8730-714ab7472744
Your versionId is: local$423da1c8-c4e1-47af-9395-57300f839670
  % Total% Received % Xferd  Average Speed   TimeTime Time  Current
 Dload  Upload   Total   SpentLeft  Speed
100  1259  100  1091  100   168   100k  15868 --:--:-- --:--:-- --:--:--  106k
Final responseApache Tomcat/8.0.26 - Error reportH1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} H2 
{font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} H3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;} BODY 
{font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} B {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} P {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;}A {color : black;}A.name 
{color : black;}.line {height: 1px; background-color: #525D76; border: none;} HTTP Status 415 - type Status 
reportmessage description The server refused this request because the request entity is in a format not supported by the req

ue

 sted resource for the requested method.Apache 
Tomcat/8.0.26
Seems the named id  already exists!

That's the script :

from subprocess import check_output, STDOUT
import json

response = check_output(["curl", "--basic", "-u", "admin:admin", "-F", 
"file=@/var/lib/jenkins/workspace/Demo-Ci-cd-automation/playbooks/ms3-simple-hello-world-app-1.0.0-SNAPSHOT.zip", "-F", "name=ms3-simple-hello-world-app", "-F", 
"version=1.0.0", "--header", "\"Content-Type: multipart/form-data\"", "http://52.73.56.141:8080/mmc-console-3.6.2/api/repository;])


try:
parsed_response = json.loads(response)
print "Your applicationId is: " + parsed_response[u'applicationId']
version_id = parsed_response[u'versionId']
print "Your versionId is: " + version_id


Don't use a bare except because it'll catch _ANY_ exception, including 
NameError, which could happen if you accidentally misspell a name.



except:
print 'Seems the named application already exists!'
print 'Seems the named versionId already exists!'

This look likes it passes curl some JSON wrapped in "'", so curl won't 
see something like this:


{"key": "value"}

(a dict), it'll see something like this:

'{"key": "value"}'

(a string delimited by '...') which isn't valid JSON.


response = check_output(["curl", "--basic", "-u", "admin:admin", "-d", "'{\"name\" : \"ms3-simple-hello-world-app\" , \"servers\": [ 
\"local$d50bdc24-ff04-4327-9284-7bb708e21c25\" ], \"applications\": [ \"" + version_id +  "\"]}'", "--header", "\'Content-Type: application/json\'", 
"http://52.73.56.141:8080/mmc-console-3.6.2/api/deployments;])

print 'Final response' + response

try:
  parsed_response = json.loads(response)
  deployid  = parsed_response[u'id']
  print "Your deployid is: " + deployid


Another bare except!


except:
print 'Seems the named id  already exists!'


'check_output' and related functions/methods will do the quoting for you.
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Re: Python Error message

[Igor Korot]

Steven,

On Thu, Aug 4, 2016 at 11:56 AM, Steven D'Aprano
 wrote:
> On Fri, 5 Aug 2016 01:31 am, GBANE FETIGUE wrote:
>
>> try:
>>   parsed_response = json.loads(response)
>>   deployid  = parsed_response[u'id']
>>   print "Your deployid is: " + deployid
>> except:
>> print 'Seems the named id  already exists!'
>
>
> I'm not going to try to debug your code blindfolded with my hands tied
> behind my back. Get rid of those "try...except" blocks so that you can see
> what error is *actually* happening.
>
> As you have it now, an error happens, somewhere. You don't know where the
> error is, or what it is, but Python generates a nice exception showing all
> the detail you need to debug.
>
> But you catch that exception, throw it away, and then print a lie.
>
> It is **not true** that the named ID already exists. That is not what the
> error is, so why does your script tell a lie?
>
> The output from the server might give you a clue:
>
> "The server refused this request because the request entity is in a format
> not supported by the requested resource for the requested method."
>
>
> Never[1] use a bare "try...except". It is the worst thing you can do to a
> Python script, making it almost impossible to debug.
>
> https://realpython.com/blog/python/the-most-diabolical-python-antipattern/
>
> Fix that problem first, get rid of the "try...except" and lying print
> messages, and then either the bug will be obvious, or we can debug further.
>
>
>
>
>
>
> [1] There are exceptions to this rule, for experts. But if you need to ask
> what they are, you're not ready to know

But even the experts will never write such a code - you never know what happens
in a month. Server might throw some new exception, you may move on to
a different project,
etc, etc. ;-)

Thank you.

>
>
> --
> Steve
> “Cheer up,” they said, “things could be worse.” So I cheered up, and sure
> enough, things got worse.
>
> --
> https://mail.python.org/mailman/listinfo/python-list
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Re: Python Error message

[Steven D'Aprano]

On Fri, 5 Aug 2016 01:31 am, GBANE FETIGUE wrote:

> try:
>   parsed_response = json.loads(response)
>   deployid  = parsed_response[u'id']
>   print "Your deployid is: " + deployid
> except:
> print 'Seems the named id  already exists!'


I'm not going to try to debug your code blindfolded with my hands tied
behind my back. Get rid of those "try...except" blocks so that you can see
what error is *actually* happening.

As you have it now, an error happens, somewhere. You don't know where the
error is, or what it is, but Python generates a nice exception showing all
the detail you need to debug.

But you catch that exception, throw it away, and then print a lie.

It is **not true** that the named ID already exists. That is not what the
error is, so why does your script tell a lie?

The output from the server might give you a clue:

"The server refused this request because the request entity is in a format
not supported by the requested resource for the requested method."


Never[1] use a bare "try...except". It is the worst thing you can do to a
Python script, making it almost impossible to debug.

https://realpython.com/blog/python/the-most-diabolical-python-antipattern/

Fix that problem first, get rid of the "try...except" and lying print
messages, and then either the bug will be obvious, or we can debug further.






[1] There are exceptions to this rule, for experts. But if you need to ask
what they are, you're not ready to know.


-- 
Steve
“Cheer up,” they said, “things could be worse.” So I cheered up, and sure
enough, things got worse.

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Re: Python Error message

[Chris Angelico]

On Fri, Aug 5, 2016 at 1:31 AM, GBANE FETIGUE  wrote:
> try:
> parsed_response = json.loads(response)
> print "Your applicationId is: " + parsed_response[u'applicationId']
> version_id = parsed_response[u'versionId']
> print "Your versionId is: " + version_id
> except:
> print 'Seems the named application already exists!'
> print 'Seems the named versionId already exists!'
>

This is a very bad idea. You're catching every possible exception and
printing out the same message for all of them. And then continuing
blithely on. Instead, catch ONLY the exceptions you really expect to
be seeing (I'm guessing KeyError here). If anything else goes wrong,
let the exception bubble up.

ChrisA
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Re: python error

[Terry Reedy]

On 11/3/2015 8:07 AM, Ruud van Rooijen wrote:

my code:

from tkinter import *

window = Tk()
label = Label(window, text="miniproject A1")
label.pack()
window.mainloop()


given error:

C:\Users\Ruud\Python35\Scripts\python.exe


Based on the below, python.exe should be in
C:\Users\Ruud\AppData\Local\Programs\Python\Python35-32
_tkinter should then be in
C:\Users\Ruud\AppData\Local\Programs\Python\Python35-32\DLLs

If you moved it, that is your problem.

If you have two python installations, with a second one in
C:\Users\Ruud\Python35, then python.exe should be in that directory, NOT 
scripts.



C:/Users/Ruud/PycharmProjects/School/project.py


I know essentially nothing about PyCharm, even if it is compatible with 
tkinter.



Traceback (most recent call last):

   File "C:/Users/Ruud/PycharmProjects/School/project.py", line 3, in 

 window = Tk()

   File 
"C:\Users\Ruud\AppData\Local\Programs\Python\Python35-32\Lib\tkinter\__init__.py",
line 1867, in __init__

 self.tk = _tkinter.create(screenName, baseName, className,
interactive, wantobjects, useTk, sync, use)

_tkinter.TclError: Can't find a usable init.tcl in the following directories:

 C:/Users/Ruud/AppData/Local/Programs/Python/Python35-32/lib/tcl8.6
C:/Users/Ruud/Python35/lib/tcl8.6 C:/Users/Ruud/lib/tcl8.6
C:/Users/Ruud/Python35/library C:/Users/Ruud/library
C:/Users/Ruud/tcl8.6.4/library C:/Users/tcl8.6.4/library


With a screwed up installation, or pair of installations, it looks 
'everyplace' but the right place.



This probably means that Tcl wasn't installed properly.



i have repaired python several times and i can't find an answer online...
please help


python.exe in scripts is not properly installed.

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Re: Python Error: ImportError: No module named ''folder_name’ at Command Prompt

[Terry Reedy]

On 7/11/2015 11:15 AM, Ernest Bonat, Ph.D. wrote:

Hi All,


I’m doing a CSV data analysis in Python using Eclipse IDE/PyDev. I have
organized my project using the standard MVC architecture. In Eclipse IDE
everything is working properly. When I run my main.py file it at Command
Prompt I got an error: ImportError: No module named 'folder_name'. It’s
like the location path of the ‘'folder_name’ was not found. Do I need to
update my main.py file to run it at the Command Prompt?


'import module' searches directories on sys.path for a file or directory 
named 'module'.  sys.path starts with '.', which represents the 
'current' directory. If you start with the directory containing main.py 
as current directory and 'folder-name' is in the same directory, the 
import should work.  Otherwise ??? EclipseIDE probably modifies the 
current dir and/or path to make things work.


For any more help, post the OS and locations of main.py, folder_name, 
and python.


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Re: Python error codes and messages location

[Fábio Santos]

On 29 May 2013 00:44, Dennis Lee Bieber wlfr...@ix.netcom.com wrote:

 On Tue, 28 May 2013 17:15:51 +1000, Chris Angelico ros...@gmail.com
 declaimed the following in gmane.comp.python.general:


  Can we internationalize English instead of localizing Python?
 
  Not-entirely-joking-ly yours,
 
 All that is required is to get Python declared a valid air traffic
 control communication (all international air traffic control uses
 English)

 Totally-joking-I-suspect

 --
 Wulfraed Dennis Lee Bieber AF6VN
 wlfr...@ix.netcom.comHTTP://wlfraed.home.netcom.com/


with import mangoes as cargo:
 allow()
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Re: Python error codes and messages location

[Fábio Santos]

On 28 May 2013 05:17, Vito De Tullio vito.detul...@gmail.com wrote:

 Fábio Santos wrote:

Speaking of PEPs and exceptions. When do we get localized
exceptions?
  
   What do you mean by localized exceptions?
  
   Please, tell me it's *NOT* a proposal to send the exception message
in
   the
   locale language!
  It is. I think I read it mentioned in python-dev or this list.
 
  Here is what I read.
 
  http://mail.python.org/pipermail/python-dev/2013-April/125364.html
 
  It wasn't only about exceptions after all. And it seems like something
  that will only happen far into the future.

 I really hope really far... have you never tried to google a localized
error
 message? :\

 --
 By ZeD


Never. I don't even try.

I still think this is a good idea. Not for debugging though.

For UI (and error logs if your requirements include writing them in the
user language), it could simplify all the
user-facing-unexpected-error-reporting into an except hook, or a
try..except high up in your call stack.

It would be a pretty big step towards RAD. But it had to be made optional
somehow.

Maybe using errno and existing exception messages together with gettext?
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Re: Python error codes and messages location

[Chris Angelico]

On Tue, May 28, 2013 at 4:57 PM, Fábio Santos fabiosantos...@gmail.com wrote:

 On 28 May 2013 05:17, Vito De Tullio vito.detul...@gmail.com wrote:
 I really hope really far... have you never tried to google a localized
 error
 message? :\

 Never. I don't even try.

Same happens when someone pastes an error onto a mailing list like
this. Unless there's some easily-identifiable token (maybe the
exception type doesn't get localized, though that has its own
consequences) by which everyone world-over can recognize the
exception, this would be a major nuisance. Also, once the interpreter
core and a few parts of the stdlib get localized, this would add a
barrier to entry for new modules... not sure this is a good thing.

Can we internationalize English instead of localizing Python?

Not-entirely-joking-ly yours,

ChrisA
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Re: Python error codes and messages location

[Fábio Santos]

On 28 May 2013 08:19, Chris Angelico ros...@gmail.com wrote:

 On Tue, May 28, 2013 at 4:57 PM, Fábio Santos fabiosantos...@gmail.com
wrote:
 
  On 28 May 2013 05:17, Vito De Tullio vito.detul...@gmail.com wrote:
  I really hope really far... have you never tried to google a localized
  error
  message? :\
 
  Never. I don't even try.

 Same happens when someone pastes an error onto a mailing list like
 this. Unless there's some easily-identifiable token (maybe the
 exception type doesn't get localized, though that has its own
 consequences) by which everyone world-over can recognize the
 exception, this would be a major nuisance.

Just to clarify, I am suggesting to have the unchanged messages in
tracebacks, but having some methods in the exception to get the exception
and message localised. Just like repr() and str() are directed at different
audiences (the programmer vs. The user), so is a traceback vs a message box.

In English, we could translate the exception name (which is limited as a
python name). EG. RuntimeError - Runtime error. Of course, this is not a
big deal, but it would let us show the error message to the user, together
with the exception.

It would be much harder to search for an error or ask for help if it was a
message written by some random developer.

OpenERP for example shows stack traces to the user. It could show a shorter
message in the user's language.

 Also, once the interpreter
 core and a few parts of the stdlib get localized, this would add a
 barrier to entry for new modules... not sure this is a good thing.

I think that would be a job for a per-language team as opposed to someone
implementing a bug fix or pushing a PEP? Even that would only be necessary
for the exceptions a module raises.

 Can we internationalize English instead of localizing Python?


That is worse than saying, why don't we all just code in python?. Or c.
Or java. Or JavaScript.

Let's not get into that. I prefer len() to new
LengthCalculatorFactoryBuilder().createLengthCalculatorFactory().createLengthCalculator().calculateLengthOf().
And a good old Python list or JavaScript array to a collection of segfaults.
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Re: Python error codes and messages location

[Chris Angelico]

On Tue, May 28, 2013 at 6:10 PM, Fábio Santos fabiosantos...@gmail.com wrote:
 Just to clarify, I am suggesting to have the unchanged messages in
 tracebacks, but having some methods in the exception to get the exception
 and message localised. Just like repr() and str() are directed at different
 audiences (the programmer vs. The user), so is a traceback vs a message box.

There's no particular reason for that to be a method on the exception,
then. You're just asking to localize a text string, and I think that
functionality already exists someplace :)

 OpenERP for example shows stack traces to the user. It could show a shorter
 message in the user's language.

Sounds like an OpenERP feature request, then.

 On 28 May 2013 08:19, Chris Angelico ros...@gmail.com wrote:
 Can we internationalize English instead of localizing Python?


 That is worse than saying, why don't we all just code in python?. Or c. Or
 java. Or JavaScript.

 Let's not get into that. I prefer len() to new
 LengthCalculatorFactoryBuilder().createLengthCalculatorFactory().createLengthCalculator().calculateLengthOf().
 And a good old Python list or JavaScript array to a collection of segfaults.

Yeah, like I said, that wasn't a serious suggestion :)

ChrisA
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Re: Python error codes and messages location

[Steven D'Aprano]

On Tue, 28 May 2013 17:15:51 +1000, Chris Angelico wrote:

 Can we internationalize English instead of localizing Python?

We have. English is the primary international language for programmers. 
(For which I am profoundly grateful.)

Japanese is also a pretty important language, but mostly in Japan. And 
China would like Chinese to be, in fact there is even a version of Python 
localised to Chinese:

http://www.chinesepython.org/


I have no objection to people creating their own, localised, 
implementation or fork of Python, in which case good luck to them but 
they're on their own. But I don't think that exceptions should otherwise 
be localised.



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Steven
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Re: Python error codes and messages location

[Serhiy Storchaka]

28.05.13 11:17, Chris Angelico написав(ла):

On Tue, May 28, 2013 at 6:10 PM, Fábio Santos fabiosantos...@gmail.com wrote:

Just to clarify, I am suggesting to have the unchanged messages in
tracebacks, but having some methods in the exception to get the exception
and message localised. Just like repr() and str() are directed at different
audiences (the programmer vs. The user), so is a traceback vs a message box.


There's no particular reason for that to be a method on the exception,
then. You're just asking to localize a text string, and I think that
functionality already exists someplace :)


It will be very helpful in case of KeyError for example.


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Re: Python error codes and messages location

[Fábio Santos]

On 28 May 2013 09:22, Chris Angelico ros...@gmail.com wrote:

 On Tue, May 28, 2013 at 6:10 PM, Fábio Santos fabiosantos...@gmail.com
wrote:
  Just to clarify, I am suggesting to have the unchanged messages in
  tracebacks, but having some methods in the exception to get the
exception
  and message localised. Just like repr() and str() are directed at
different
  audiences (the programmer vs. The user), so is a traceback vs a message
box.

 There's no particular reason for that to be a method on the exception,
 then. You're just asking to localize a text string, and I think that
 functionality already exists someplace :)

Yes :) what we don't have is a translation string for every exception that
Python could raise. Or at least some of them.

  OpenERP for example shows stack traces to the user. It could show a
shorter
  message in the user's language.

 Sounds like an OpenERP feature request, then.

No, it's just something that OpenERP would obviously do if it had a library
to, or language support :) this could be the One Obvious Way To Do It for
displaying error messages in localised applications.

That said, I'm going to think about this and maybe write a library for
localising exceptions and a portuguese translation pack.

PS. FWIW I'm rather stubborn sometimes. Sorry if I bothered you in any way.
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Re: Python error codes and messages location

[Cameron Simpson]

On 27May2013 04:49, Carlos Nepomuceno carlosnepomuc...@outlook.com wrote:
|  From: steve+comp.lang.pyt...@pearwood.info
|  On Mon, 27 May 2013 02:13:54 +0300, Carlos Nepomuceno wrote:
|  Where can I find all error codes and messages that Python throws (actual
|  codes and messages from exceptions raised by stdlib)?
| 
|  There is no list. It is subject to change from version to version,
|  including point releases.
[...]
|  Read the source code.
[...]
| 
| That's bad! I'd like to check all the IOError codes that may be
| raised by a function/method but the information isn't there.

No, you really don't.

There are particular, expected, errors you know what to do with
and can proceed in the face of.

And there will often be errors you _don't_ know what to do with.
With the latter, what is your program going to do? You often can't
proceed, so all you can do is log the error and cancel, cleaning
up as you back out. In that circumstance, how will knowing the name
of the error help? You've logged it, and hopefully the exception
message is sufficient.

| Take open() for example[1]. It only says it raises an IOError exception.
| 
| I've had to try open('','r') to discover that Errno 22 is the one IOError: 
[Errno 22] invalid mode ('r') or filename: ''

It is vague because that is an OS level error, and errno 22 is
EINVAL. For example, MacOSX says (in man 2 intro):

 22 EINVAL Invalid argument.  Some invalid argument was supplied. (For
 example, specifying an undefined signal to a signal or kill func‐
 tion).

It happens that above, the filename '' is invalid.

But so what? That call is _never_ going to work because the arguments
are invalid. So you response will be the same, programmatically,
as with many other errors: log and abort.

| Will I only be able to get all error codes reading the source code of open()?

Nope. Well, not directly.

Python open call's the OS' open. If that succeeds, Python does some
more housekeeping and hands you a file python object. But if the
OS open fails, Python reports the OS error.

From the Python source you will see that the OS open is called. So
you must then go to the OS docuemntation for further information.

| Is there a way to simulate the errors instead of actually causing
| them? I mean not raising an instance of IOError that I create (like
| raise IOError(666,'Hell happens')), but one with the actual
| contents 'args = (errno, strerr)' that open() would raise?
| 
| Something like:
| 
| f=open('filename','r')
| for x in range(25):
|     try:
|     f.raise_errno(x)
|     except IOError, e:
|     if   e.errno == 1:
|     treat_err1()
|     continue
|     elif e.errno == 2:
|     treat_err2()
|     continue

Well, maybe this (untested):

  for x in range(25):
      try:
      exc = OSError(os.strerror(x))
  exc.errno = x
  raise exc
      except IOError, e:
      if   e.errno == 1:
      treat_err1()
      continue
      elif e.errno == 2:
      treat_err2()
      continue

BTW, I recommend importing errno and using symbolic names. It makes things 
much more readable, and accomodates the situation where the symbols map to 
different numbers on different platforms. And have a catch-all. For example:

  import errno
  ...
  try:
f = open(filename, .)
  except OSError, e:
if e.errno == errno.EPERM:
  ... Operation not permitted ...
elif e.errno == errno.ENOENT:
  ... No such file or directory ...
else:
  # surprise!
  # log message, let the exception get out
  # callers can catch things in turn
  logging.error(open(%s) fails: %s % (filename, e))
  raise

|  I've already found the module 'errno' and got a dictionary
|  (errno.errorcode) and some system error messages
|  (os.strerror(errno.ENAMETOOLONG)) but there's more I couldn't find.
| 
|  These are the standard C operating system and file system error codes,
|  not Python exceptions.
| 
| Yes, the docs say it's from linux/include/errno.h.  
  

On Linux, yes. In general, on any UNIX system the command man 2
intro lists the errors that system calls like open may return. And
man 2 open should list the particular errors that open can return.
_On that platform_.

The platform variation is a major reason why you should not hope
to enumerate all the errors; the other reason is that you can't
treat every error individually in a fine grained fashion without
making your code hard to read and maintain: the core logic of the
program is hidden behind a forest of tiny little special cases.

Your code will be clearer if you handle the errors that are expected
and that permit the program to proceed sensible. Other errors should
elicit a log message of course, but if you can't proceed with the
task at hand you can almost certainly only abort and try to tidy
up while doing so.

Cheers,
-- 

Processes are like potatoes.- NCR 

Re: Python error codes and messages location

[Chris Angelico]

On Mon, May 27, 2013 at 4:11 PM, Cameron Simpson c...@zip.com.au wrote:
 On 27May2013 04:49, Carlos Nepomuceno carlosnepomuc...@outlook.com wrote:
 | That's bad! I'd like to check all the IOError codes that may be
 | raised by a function/method but the information isn't there.

 No, you really don't.

Heh. I concur. Opening a file can generate roughly forty-two million
different errors. Here's a smattering that you might not be expecting:

* The path points somewhere that's not currently mounted
* The path represents a device that is not properly working
* It's over a network and the server at the far end is down
* It's over a network and the server sends back maliciously crafted data
* It's over a network and the server sends back an incorrect error code
* You tried to open something that doesn't exist, and your disk quota is used up
* The system has run out of handles
* You're trying to create something in the root directory of a FAT
volume that already has too many root directory entries

And plenty more besides. Those are just a few that I could come up
with off the top of my head.

Just catch whatever makes sense (IOError maybe), and don't sweat the details.

ChrisA
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Re: Python error codes and messages location

[Mark Lawrence]

On 27/05/2013 07:11, Cameron Simpson wrote:


BTW, I recommend importing errno and using symbolic names. It makes things 
much more readable, and accomodates the situation where the symbols map to different 
numbers on different platforms. And have a catch-all. For example:

Cheers,



This should make life easier for us 
http://docs.python.org/3/whatsnew/3.3.html#pep-3151-reworking-the-os-and-io-exception-hierarchy


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Re: Python error codes and messages location

[Fábio Santos]

On 27 May 2013 12:41, Mark Lawrence breamore...@yahoo.co.uk wrote:
 This should make life easier for us
http://docs.python.org/3/whatsnew/3.3.html#pep-3151-reworking-the-os-and-io-exception-hierarchy

Speaking of PEPs and exceptions. When do we get localized exceptions?
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Re: Python error codes and messages location

[Steven D'Aprano]

On Mon, 27 May 2013 13:46:50 +0100, Fábio Santos wrote:

 Speaking of PEPs and exceptions. When do we get localized exceptions? 


We're waiting for you to volunteer. When can you start?


-- 
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Re: Python error codes and messages location

[Fábio Santos]

On Mon, May 27, 2013 at 2:11 PM, Steven D'Aprano
steve+comp.lang.pyt...@pearwood.info wrote:
 On Mon, 27 May 2013 13:46:50 +0100, Fábio Santos wrote:

 Speaking of PEPs and exceptions. When do we get localized exceptions?


 We're waiting for you to volunteer. When can you start?

I'd love to work on that but my C is too shabby to say the least.

--
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RE: Python error codes and messages location

[Carlos Nepomuceno]

Thanks so much guys!

I'm not planning to prepare for every possible situation, but I certainly am 
responsible to handle most common errors. So it's really important to know what 
a function/method returns when called.

Exception handling may take lots of code, but I'm used to it. It's much better 
to have a graceful shutdown than a data/time loss. ;)

I think PEP 3151 is a step ahead! That's almost exactly what I was looking for. 
Why did it take so long to have that implemented?   
  
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Re: Python error codes and messages location

[Mark Lawrence]

On 27/05/2013 17:54, Carlos Nepomuceno wrote:


I think PEP 3151 is a step ahead! That's almost exactly what I was looking for. 
Why did it take so long to have that implemented?   




Lack of volunteers.

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Re: Python error codes and messages location

[Terry Jan Reedy]

On 5/27/2013 12:54 PM, Carlos Nepomuceno wrote:


I think PEP 3151 is a step ahead! That's almost exactly what I was looking for. 
Why did it take so long to have that implemented?   



Since this PEP involved changing existing features, rather than adding 
something mew, it probably took moe time and discussion to get consensus 
on details of the change.


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Re: Python error codes and messages location

[Vito De Tullio]

Fábio Santos wrote:

 This should make life easier for us
 http://docs.python.org/3/whatsnew/3.3.html#pep-3151-reworking-the-os-and-io-exception-hierarchy
 
 Speaking of PEPs and exceptions. When do we get localized exceptions?

What do you mean by localized exceptions?

Please, tell me it's *NOT* a proposal to send the exception message in the 
locale language!

-- 
By ZeD

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Re: Python error codes and messages location

[Fábio Santos]

On 27 May 2013 19:23, Vito De Tullio vito.detul...@gmail.com wrote:

 Fábio Santos wrote:

  This should make life easier for us
 
http://docs.python.org/3/whatsnew/3.3.html#pep-3151-reworking-the-os-and-io-exception-hierarchy
 
  Speaking of PEPs and exceptions. When do we get localized exceptions?

 What do you mean by localized exceptions?

 Please, tell me it's *NOT* a proposal to send the exception message in the
 locale language!

 --
 By ZeD

 --
 http://mail.python.org/mailman/listinfo/python-list

It is. I think I read it mentioned in python-dev or this list.
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Re: Python error codes and messages location

[Fábio Santos]

On 27 May 2013 19:36, Fábio Santos fabiosantos...@gmail.com wrote:


 On 27 May 2013 19:23, Vito De Tullio vito.detul...@gmail.com wrote:
 
  Fábio Santos wrote:
 
   This should make life easier for us
  
http://docs.python.org/3/whatsnew/3.3.html#pep-3151-reworking-the-os-and-io-exception-hierarchy
  
   Speaking of PEPs and exceptions. When do we get localized exceptions?
 
  What do you mean by localized exceptions?
 
  Please, tell me it's *NOT* a proposal to send the exception message in
the
  locale language!
 
  --
  By ZeD
 
  --
  http://mail.python.org/mailman/listinfo/python-list

 It is. I think I read it mentioned in python-dev or this list.

Here is what I read.

http://mail.python.org/pipermail/python-dev/2013-April/125364.html

It wasn't only about exceptions after all. And it seems like something that
will only happen far into the future.
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Re: Python error codes and messages location

[Vito De Tullio]

Fábio Santos wrote:

   Speaking of PEPs and exceptions. When do we get localized exceptions?
 
  What do you mean by localized exceptions?
 
  Please, tell me it's *NOT* a proposal to send the exception message in
  the
  locale language!
 It is. I think I read it mentioned in python-dev or this list.
 
 Here is what I read.
 
 http://mail.python.org/pipermail/python-dev/2013-April/125364.html
 
 It wasn't only about exceptions after all. And it seems like something
 that will only happen far into the future.

I really hope really far... have you never tried to google a localized error 
message? :\

-- 
By ZeD

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Re: Python error codes and messages location

[Steven D'Aprano]

On Mon, 27 May 2013 02:13:54 +0300, Carlos Nepomuceno wrote:

 Where can I find all error codes and messages that Python throws (actual
 codes and messages from exceptions raised by stdlib)?

There is no list. It is subject to change from version to version, 
including point releases.

Many functions and methods document which exceptions they can be expected 
to raise, or at least the *usual* exceptions, but many more do not. And 
the error messages themselves are implementation details and are subject 
to change without notice, even if the exception type is a documented part 
of the API.

You can see a full list of built-in exception types in the docs:

http://docs.python.org/3/library/exceptions.html

but of course since they are classes, they can be subclassed, and in 
principle a function that raises (say) ValueError might sometimes raise a 
subclass of ValueError without documenting it.

So the actual answer to your question is:

Read the source code.


Sorry :-(


 I've already found the module 'errno' and got a dictionary
 (errno.errorcode) and some system error messages
 (os.strerror(errno.ENAMETOOLONG)) but there's more I couldn't find.

These are the standard C operating system and file system error codes, 
not Python exceptions.


-- 
Steven
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RE: Python error codes and messages location

[Carlos Nepomuceno]

 From: steve+comp.lang.pyt...@pearwood.info
 Subject: Re: Python error codes and messages location
 Date: Mon, 27 May 2013 00:53:41 +
 To: python-list@python.org

 On Mon, 27 May 2013 02:13:54 +0300, Carlos Nepomuceno wrote:

 Where can I find all error codes and messages that Python throws (actual
 codes and messages from exceptions raised by stdlib)?

 There is no list. It is subject to change from version to version,
 including point releases.

 Many functions and methods document which exceptions they can be expected
 to raise, or at least the *usual* exceptions, but many more do not. And
 the error messages themselves are implementation details and are subject
 to change without notice, even if the exception type is a documented part
 of the API.

 You can see a full list of built-in exception types in the docs:

 http://docs.python.org/3/library/exceptions.html

 but of course since they are classes, they can be subclassed, and in
 principle a function that raises (say) ValueError might sometimes raise a
 subclass of ValueError without documenting it.

 So the actual answer to your question is:

 Read the source code.


 Sorry :-(

That's bad! I'd like to check all the IOError codes that may be raised by a 
function/method but the information isn't there.

Take open() for example[1]. It only says it raises an IOError exception.

I've had to try open('','r') to discover that Errno 22 is the one IOError: 
[Errno 22] invalid mode ('r') or filename: ''

Will I only be able to get all error codes reading the source code of open()?

Is there a way to simulate the errors instead of actually causing them? I mean 
not raising an instance of IOError that I create (like raise IOError(666,'Hell 
happens')), but one with the actual contents 'args = (errno, strerr)' that 
open() would raise?

Something like:

f=open('filename','r')
for x in range(25):
    try:
    f.raise_errno(x)
    except IOError, e:
    if   e.errno == 1:
    treat_err1()
    continue
    elif e.errno == 2:
    treat_err2()
    continue
...



[1] http://docs.python.org/2/library/functions.html#open

 I've already found the module 'errno' and got a dictionary
 (errno.errorcode) and some system error messages
 (os.strerror(errno.ENAMETOOLONG)) but there's more I couldn't find.

 These are the standard C operating system and file system error codes,
 not Python exceptions.

Yes, the docs say it's from linux/include/errno.h.
  
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Re: Python error codes and messages location

[Cameron Simpson]

On 27May2013 00:53, Steven D'Aprano steve+comp.lang.pyt...@pearwood.info 
wrote:
| On Mon, 27 May 2013 02:13:54 +0300, Carlos Nepomuceno wrote:
|  Where can I find all error codes and messages that Python throws (actual
|  codes and messages from exceptions raised by stdlib)?
| 
| There is no list. It is subject to change from version to version, 
| including point releases.

And better still, it is platform specific too.

[...]
|  I've already found the module 'errno' and got a dictionary
|  (errno.errorcode) and some system error messages
|  (os.strerror(errno.ENAMETOOLONG)) but there's more I couldn't find.
| 
| These are the standard C operating system and file system error codes, 
| not Python exceptions.

And the poster boy example for platform dependence.

Besides, knowing the exact errors that may occur is not the Python Way, it is
the Java Way.

Run it. if it goes bang, handle the errors you expect and understand.
If you get something else, go bang for real because you _don't_
know what should happen, and proceeding is probably insane.

Cheers,
-- 
Cameron Simpson c...@zip.com.au

Motorcycles are like peanuts... who can stop at just one?
- Zebee Johnstone ze...@zip.com.au aus.motorcycles Poser Permit #1
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Re: Python Error

[Duncan Booth]

Jürgen A. Erhard j...@jaerhard.com wrote:

 Peter's right, but instead of a print before the line, put a
 try/except around it, like
 
try:
   set1 = set(list1)
except TypeError:
   print list1
   raise
 
 This way, only the *actual* error triggers any output.  With a general
 print before, you can get a lot of unnecessary output.
 
 Grits, J
 

Or even better:

   try:
  set1 = set(list1)
   except TypeError:
  print list1
  import pdb; pdb.set_trace()
  raise

Then the error will print the value of list1 and drop you into the debugger 
so you can examine what's going on in more detail.

-- 
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Re: Python Error

[Peter Otten]

subhabangal...@gmail.com wrote:

 Dear Group,
 
 I was trying to convert the list to a set, with the following code:
 
 set1=set(list1)
 
 the code was running fine, but all on a sudden started to give the
 following error,
 
 set1=set(list1)
 TypeError: unhashable type: 'list'
 
 please let me know how may I resolve.
 
 And sometimes some good running program gives error all on a sudden with
 no parameter changed, how may I debug it?

Add a print statement before the offending line:

print list1
set1 = set(list1)

You will see that list1 contains another list, e. g. this works...

 list1 = [alpha, beta]   
 
   
 set(list1)  
 
   
set(['alpha', 'beta'])  

  

...while this doesn't:

 list1 = [alpha, [beta]] 
 
   
 set(list1)  
 
  
Traceback (most recent call last):  

  
  File stdin, line 1, in module   

  
TypeError: unhashable type: 'list'  

  

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Re: Python Error

[subhabangalore]

On Sunday, July 29, 2012 2:57:18 PM UTC+5:30, (unknown) wrote:
 Dear Group,
 
 
 
 I was trying to convert the list to a set, with the following code:
 
 
 
 set1=set(list1)
 
 
 
Dear Peter,
Thanks for the answer. But my list does not contain another list that is the 
issue. Intriguing. Thinking what to do. 
Regards,
Subhabrata. 
 the code was running fine, but all on a sudden started to give the following 
 error,
 
 
 
 set1=set(list1)
 
 TypeError: unhashable type: 'list'
 
 
 
 please let me know how may I resolve.
 
 
 
 And sometimes some good running program gives error all on a sudden with no 
 parameter changed, how may I debug it?
 
 
 
 Thanking You in Advance,
 
 
 
 Regards,
 
 Subhabrata Banerjee.

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Re: Python Error

[Thomas Jollans]

On 07/29/2012 02:30 PM, subhabangal...@gmail.com wrote:
 Thanks for the answer. But my list does not contain another list that is the 
 issue. Intriguing. Thinking what to do. 

What does your list contain? Can you reproduce the issue in a few
self-contained lines of code that you can show us, that we can test
ourselves?

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Re: Python Error

[Ifthikhan Nazeem]

Hi,

Have you tried printing the list which is passed onto the set. The items in
the list passed should be hashable and possibly there are objects which are
not hashable.

On Sun, Jul 29, 2012 at 2:30 PM, subhabangal...@gmail.com wrote:

 On Sunday, July 29, 2012 2:57:18 PM UTC+5:30, (unknown) wrote:
  Dear Group,
 
 
 
  I was trying to convert the list to a set, with the following code:
 
 
 
  set1=set(list1)
 
 
 
 Dear Peter,
 Thanks for the answer. But my list does not contain another list that is
 the issue. Intriguing. Thinking what to do.
 Regards,
 Subhabrata.
  the code was running fine, but all on a sudden started to give the
 following error,
 
 
 
  set1=set(list1)
 
  TypeError: unhashable type: 'list'
 
 
 
  please let me know how may I resolve.
 
 
 
  And sometimes some good running program gives error all on a sudden with
 no parameter changed, how may I debug it?
 
 
 
  Thanking You in Advance,
 
 
 
  Regards,
 
  Subhabrata Banerjee.

 --
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Re: Python Error

[Mark Lawrence]

On 29/07/2012 13:30, subhabangal...@gmail.com wrote:

On Sunday, July 29, 2012 2:57:18 PM UTC+5:30, (unknown) wrote:

Dear Group,

I was trying to convert the list to a set, with the following code:

set1=set(list1)


Dear Peter,
Thanks for the answer. But my list does not contain another list that is the 
issue. Intriguing. Thinking what to do.
Regards,
Subhabrata.


Can you loop round the list and print each entry and its type, that 
should give you some clues?



the code was running fine, but all on a sudden started to give the following 
error,

set1=set(list1)

TypeError: unhashable type: 'list'

please let me know how may I resolve.

And sometimes some good running program gives error all on a sudden with no 
parameter changed, how may I debug it?

Thanking You in Advance,

Regards,

Subhabrata Banerjee.





--
Cheers.

Mark Lawrence.

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Re: Python Error

[Steven D'Aprano]

On Sun, 29 Jul 2012 05:30:15 -0700, subhabangalore wrote:

 Dear Peter,
 Thanks for the answer. But my list does not contain another list that is
 the issue. Intriguing. 

That is not what the error message says. You said that this line of code:

set1=set(list1)

gives this error:

TypeError: unhashable type: 'list'


Almost certainly, either you are mistaken about the line of code which 
gives the error, or you are mistaken about the error, or you are mistaken 
that your list does not contain any lists.


 Thinking what to do. 

Exactly what Peter suggested: print the list before you try to convert it 
to a set, and see what it actually contains.

It will also help you to read this page and try to follow its advice:

http://sscce.org/



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Re: Python Error

[Roy Smith]

In article 81818a9c-60d3-48da-9345-0c0dfd5b2...@googlegroups.com,
 subhabangal...@gmail.com wrote:

 set1=set(list1)
 
 the code was running fine, but all on a sudden started to give the following 
 error,
 
 set1=set(list1)
 TypeError: unhashable type: 'list'

First, make sure you understand what the error means.  All the elements 
of a set must be hashable.  Lists are not hashable because they are 
mutable.  So, what the error is telling you is that some element of 
list1 is itself a list, and therefore not hashable, and thus the set 
can't be created.

I would start by printing list1.  If the list is long (or contains 
deeply nested structures), just doing print list1 may result in 
something that is difficult to read.  In that case, try using pprint 
(see the pprint module) to get a nicer display.

If it's still not obvious, pull out the bigger guns.  Try something like:

for item in list1:
   try:
  hash(item)
   except TypeError:
  print This one can't be hashed: %s % item

 And sometimes some good running program gives error all on a sudden with no 
 parameter changed

Well, *something* changed.  Assuming nothing truly bizarre like a stray 
Higgs Boson flipping a bit in your computer's memory, what you need to 
do is figure out what that is.  Did you change your code in any way 
(having everything under version control helps here)?  If not the code, 
then what changed about the input?

If you're sure that both the code and the input are unchanged, that 
leaves something in the environment.  Did your python interpreter get 
upgraded to a newer version?  Or your operating system?  PYTHONPATH?

Depending on what your program is doing, it could be something time 
based.  A different time zone, perhaps?  Did daylight savings time just 
go into or out of effect where you are?  Does it only fail on Sunday?
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Re: Python Error

[Jürgen A . Erhard]

On Sun, Jul 29, 2012 at 01:08:57PM +0200, Peter Otten wrote:
 subhabangal...@gmail.com wrote:
 
  Dear Group,
  
  I was trying to convert the list to a set, with the following code:
  
  set1=set(list1)
  
  the code was running fine, but all on a sudden started to give the
  following error,
  
  set1=set(list1)
  TypeError: unhashable type: 'list'
  
 
 Add a print statement before the offending line:
 
 print list1
 set1 = set(list1)
 
 You will see that list1 contains another list, e. g. this works...
 

Peter's right, but instead of a print before the line, put a
try/except around it, like

   try:
  set1 = set(list1)
   except TypeError:
  print list1
  raise

This way, only the *actual* error triggers any output.  With a general
print before, you can get a lot of unnecessary output.

Grits, J
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Re: Python Error

[subhabangalore]

On Sunday, July 29, 2012 7:53:59 PM UTC+5:30, Roy Smith wrote:
 In article 81818a9c-60d3-48da-9345-0c0dfd5b2...@googlegroups.com,
 
  subhabangal...@gmail.com wrote:
 
 
 
  set1=set(list1)
 
  
 
  the code was running fine, but all on a sudden started to give the 
  following 
 
  error,
 
  
 
  set1=set(list1)
 
  TypeError: unhashable type: 'list'
 
 
 
 First, make sure you understand what the error means.  All the elements 
 
 of a set must be hashable.  Lists are not hashable because they are 
 
 mutable.  So, what the error is telling you is that some element of 
 
 list1 is itself a list, and therefore not hashable, and thus the set 
 
 can't be created.
 
 
 
 I would start by printing list1.  If the list is long (or contains 
 
 deeply nested structures), just doing print list1 may result in 
 
 something that is difficult to read.  In that case, try using pprint 
 
 (see the pprint module) to get a nicer display.
 
 
 
 If it's still not obvious, pull out the bigger guns.  Try something like:
 
 
 
 for item in list1:
 
try:
 
   hash(item)
 
except TypeError:
 
   print This one can't be hashed: %s % item
 
 
 
  And sometimes some good running program gives error all on a sudden with no 
 
  parameter changed
 
 
 
 Well, *something* changed.  Assuming nothing truly bizarre like a stray 
 
 Higgs Boson flipping a bit in your computer's memory, what you need to 
 
 do is figure out what that is.  Did you change your code in any way 
 
 (having everything under version control helps here)?  If not the code, 
 
 then what changed about the input?
 
 
 
 If you're sure that both the code and the input are unchanged, that 
 
 leaves something in the environment.  Did your python interpreter get 
 
 upgraded to a newer version?  Or your operating system?  PYTHONPATH?
 
 
 
 Depending on what your program is doing, it could be something time 
 
 based.  A different time zone, perhaps?  Did daylight savings time just 
 
 go into or out of effect where you are?  Does it only fail on Sunday?

Hi Roy,
Sorry I overlooked your answer. It fails generally on Sunday. True. How you got 
it? I recently downloaded Python2.7 64 bit -while I am working on Python3.2.1 
64 bit Windows 7 SP1. 
Regards,
Subhabrata Banerjee.  
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Re: Python Error

[Emile van Sebille]

On 7/29/2012 5:30 AM subhabangal...@gmail.com said...

On Sunday, July 29, 2012 2:57:18 PM UTC+5:30, (unknown) wrote:

Dear Group,
I was trying to convert the list to a set, with the following code:
set1=set(list1)

Thanks for the answer. But my list does not contain another list that is the 
issue. Intriguing. Thinking what to do.


Now you need to identify the type of the object that is causing python 
to misreport the unhashable type causing the error as the error you're 
getting says list and you say there isn't one.  So, now we have a python 
bug.


 set ([1,2,3])
set([1, 2, 3])
 set ([1,2,[]])
Traceback (most recent call last):
  File stdin, line 1, in module
TypeError: unhashable type: 'list'
 set ([1,2,{}])
Traceback (most recent call last):
  File stdin, line 1, in module
TypeError: unhashable type: 'dict'



 the code was running fine, but all on a sudden started to give the 
following error,




 set1=set(list1)

 TypeError: unhashable type: 'list'


Try adding the following:

for ii in list1:
try:
set([ii])
except:
print this causes an error type (val): %s (%s)  (type(ii),ii)


Either it's a python bug or there really is a list in there.

Emile


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Re: Python Error

[subhabangalore]

On Sunday, July 29, 2012 2:57:18 PM UTC+5:30, (unknown) wrote:
 Dear Group,
 
 
 
 I was trying to convert the list to a set, with the following code:
 
 
 
 set1=set(list1)
 
 
 
 the code was running fine, but all on a sudden started to give the following 
 error,
 
 
 
 set1=set(list1)
 
 TypeError: unhashable type: 'list'
 
 
 
 please let me know how may I resolve.
 
 
 
 And sometimes some good running program gives error all on a sudden with no 
 parameter changed, how may I debug it?
 
 
 
 Thanking You in Advance,
 
 
 
 Regards,
 
 Subhabrata Banerjee.

Dear Group,

Thank you for your kind time and reply. True as Steven pointed the error should 
be specific. I tested. Put comment mark before the set assignment, printed the 
list as Peter suggested, taken the print of the list, but no it is not my 
problem, as you suggested what is contained in the list, I am taking out the 
values and then assigning blank list and appending the processed values in the 
list. 
If this kind of problems happen, --rare but in my 6 yrs Python experience 
happened sometimes--then I take a new window, rewrite or copy the earlier code 
module by module, give a new method name--believe it or not--- works. 

Regards,
Subhabrata. 
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Re: Python Error

[Chris Angelico]

On Mon, Jul 30, 2012 at 12:36 AM,  subhabangal...@gmail.com wrote:
 If this kind of problems happen, --rare but in my 6 yrs Python experience 
 happened sometimes--then I take a new window, rewrite or copy the earlier 
 code module by module, give a new method name--believe it or not--- works.

If that solves your problem, it may be that you inadvertently shadowed
a built-in - maybe you assigned to set or list or something.

ChrisA
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Re: python error PLS-00306: wrong number or types of arguments in

[John Gordon]

In 01efb6ac-deaa-4bdb-8b2d-b603bddde...@n5g2000yqh.googlegroups.com Adeoluwa 
Odein stratfordtena...@gmail.com writes:

 Hello
 I am using the zxJDBC package with jython (similar to python), and I
 am having python error PLS-00306: wrong number or types of arguments
 error when using the callproc() method to execute a stored
 procedure.

 The Oracle stored procedure takes a single OUT varchar2 parameter.  My
 code is as follows:

 p = [None]
 c.callproc('pkg1_returns', p);

If the procedure takes a varchar2 parameter, why are you passing [None]?

It might help if you posted the method signature of the Oracle stored
procedure you're trying to call.

-- 
John Gordon   A is for Amy, who fell down the stairs
gor...@panix.com  B is for Basil, assaulted by bears
-- Edward Gorey, The Gashlycrumb Tinies

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Re: python error PLS-00306: wrong number or types of arguments in

[Adeoluwa Odein]

Thanks, your assistance will be greatly appreciated on the right way
forward.  See the Stored Procedure Below -very simple:



create or replace package c2_pkg
as
procedure openc;
procedure closec;
procedure RS22(v out varchar);
end;
/

create or replace package body c2_pkg
as
v_first_time boolean := TRUE;
v_cursor number;
cursor srvr_cur
 is
select distinct b.mid from SVR a,VAR b where a.mid = b.mid;

procedure openc
as
begin
if not srvr_cur%ISOPEN
then
open srvr_cur;
end if;

end openc;

procedure closec
as
begin
close srvr_cur;
end closec;


procedure RS22(v out varchar2)
as
-- Server varchar2(64);

begin
  Server := NULL;
 fetch srvr_cur into Server;
v := Server;

end RS22;

end;
/




















On Jul 13, 1:40 pm, John Gordon gor...@panix.com wrote:
 In 01efb6ac-deaa-4bdb-8b2d-b603bddde...@n5g2000yqh.googlegroups.com 
 Adeoluwa Odein stratfordtena...@gmail.com writes:

  Hello
  I am using the zxJDBC package with jython (similar to python), and I
  am having python error PLS-00306: wrong number or types of arguments
  error when using the callproc() method to execute a stored
  procedure.



  The Oracle stored procedure takes a single OUT varchar2 parameter.  My
  code is as follows:
  p = [None]
  c.callproc('pkg1_returns', p);

 If the procedure takes a varchar2 parameter, why are you passing [None]?

 It might help if you posted the method signature of the Oracle stored
 procedure you're trying to call.

 --
 John Gordon                   A is for Amy, who fell down the stairs
 gor...@panix.com              B is for Basil, assaulted by bears
                                 -- Edward Gorey, The Gashlycrumb Tinies

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Re: python error PLS-00306: wrong number or types of arguments in

[John Gordon]

In 9e937261-d05d-477a-90d2-a690e85e1...@h17g2000yqn.googlegroups.com Adeoluwa 
Odein stratfordtena...@gmail.com writes:

 Thanks, your assistance will be greatly appreciated on the right way
 forward.  See the Stored Procedure Below -very simple:

I don't see a procedure named pkg1_returns, which is the prodecure
called by your code.  Where is this procedure?

-- 
John Gordon   A is for Amy, who fell down the stairs
gor...@panix.com  B is for Basil, assaulted by bears
-- Edward Gorey, The Gashlycrumb Tinies

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Re: python error PLS-00306: wrong number or types of arguments in

[Adeoluwa Odein]

The actual jython/python call is:

p = [None]
c.callproc('c2_pkg.RS22', p);

I used a placeholder initially; now that you have the SQL code, there
it is.  It essentially invokes the stored procedure, and it should
return the OUT variable p, with some value.  It doesn't have to be a
cursor fetch; even a minor text assignment.






On Jul 13, 2:10 pm, John Gordon gor...@panix.com wrote:
 In 9e937261-d05d-477a-90d2-a690e85e1...@h17g2000yqn.googlegroups.com 
 Adeoluwa Odein stratfordtena...@gmail.com writes:

  Thanks, your assistance will be greatly appreciated on the right way
  forward.  See the Stored Procedure Below -very simple:

 I don't see a procedure named pkg1_returns, which is the prodecure
 called by your code.  Where is this procedure?

 --
 John Gordon                   A is for Amy, who fell down the stairs
 gor...@panix.com              B is for Basil, assaulted by bears
                                 -- Edward Gorey, The Gashlycrumb Tinies

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Re: python error PLS-00306: wrong number or types of arguments in

[John Gordon]

In d45161dc-648c-4a44-a563-317b5f5e5...@h14g2000yqd.googlegroups.com Adeoluwa 
Odein stratfordtena...@gmail.com writes:

 The actual jython/python call is:

 p =3D [None]
 c.callproc('c2_pkg.RS22', p);

 I used a placeholder initially; now that you have the SQL code, there
 it is.  It essentially invokes the stored procedure, and it should
 return the OUT variable p, with some value.  It doesn't have to be a
 cursor fetch; even a minor text assignment.

That procedure is defined as taking one parameter, but you're passing
an empty parameter list.  Why?

-- 
John Gordon   A is for Amy, who fell down the stairs
gor...@panix.com  B is for Basil, assaulted by bears
-- Edward Gorey, The Gashlycrumb Tinies

-- 
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Re: python error PLS-00306: wrong number or types of arguments in

[Adeoluwa Odein]

On Jul 13, 2:26 pm, John Gordon gor...@panix.com wrote:
 In d45161dc-648c-4a44-a563-317b5f5e5...@h14g2000yqd.googlegroups.com 
 Adeoluwa Odein stratfordtena...@gmail.com writes:

  The actual jython/python call is:
It's taking an OUT parameter.. I'm just following the examples as
documented by zxJDBC.  How can I fix it?




  p =3D [None]
  c.callproc('c2_pkg.RS22', p);
  I used a placeholder initially; now that you have the SQL code, there
  it is.  It essentially invokes the stored procedure, and it should
  return the OUT variable p, with some value.  It doesn't have to be a
  cursor fetch; even a minor text assignment.

 That procedure is defined as taking one parameter, but you're passing
 an empty parameter list.  Why?

 --
 John Gordon                   A is for Amy, who fell down the stairs
 gor...@panix.com              B is for Basil, assaulted by bears
                                 -- Edward Gorey, The Gashlycrumb Tinies

-- 
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Re: python error PLS-00306: wrong number or types of arguments in

[Adeoluwa Odein]

On Jul 13, 2:26 pm, John Gordon gor...@panix.com wrote:
 In d45161dc-648c-4a44-a563-317b5f5e5...@h14g2000yqd.googlegroups.com 
 Adeoluwa Odein stratfordtena...@gmail.com writes:

  The actual jython/python call is:
  p =3D [None]
  c.callproc('c2_pkg.RS22', p);
  I used a placeholder initially; now that you have the SQL code, there
  it is.  It essentially invokes the stored procedure, and it should
  return the OUT variable p, with some value.  It doesn't have to be a
  cursor fetch; even a minor text assignment.

 That procedure is defined as taking one parameter, but you're passing
 an empty parameter list.  Why?

 --
 John Gordon                   A is for Amy, who fell down the stairs
 gor...@panix.com              B is for Basil, assaulted by bears
                                 -- Edward Gorey, The Gashlycrumb Tinies

I'm new to jython...
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Re: python error PLS-00306: wrong number or types of arguments in

[John Gordon]

 It's taking an OUT parameter.. I'm just following the examples as
 documented by zxJDBC.  How can I fix it?

I suspect the example you're looking at was for a procedure which has no
arguments, so in that case it would make sense to pass an empty parameter
list.

I haven't worked with OUT parameters so I don't know if this will work,
but try it and see what happens:

  my_string = 
  p = [my_string]
  c.callproc('c2_pkg.RS22', p);
  print p

-- 
John Gordon   A is for Amy, who fell down the stairs
gor...@panix.com  B is for Basil, assaulted by bears
-- Edward Gorey, The Gashlycrumb Tinies

-- 
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Re: python error PLS-00306: wrong number or types of arguments in

[Adeoluwa Odein]

On Jul 13, 4:09 pm, John Gordon gor...@panix.com wrote:
  It's taking an OUT parameter.. I'm just following the examples as
  documented by zxJDBC.  How can I fix it?

 I suspect the example you're looking at was for a procedure which has no
 arguments, so in that case it would make sense to pass an empty parameter
 list.

 I haven't worked with OUT parameters so I don't know if this will work,
 but try it and see what happens:

   my_string = 
   p = [my_string]
   c.callproc('c2_pkg.RS22', p);
   print p

 --
 John Gordon                   A is for Amy, who fell down the stairs
 gor...@panix.com              B is for Basil, assaulted by bears
                                 -- Edward Gorey, The Gashlycrumb Tinies


The same error. The sample were found on the following site --I copied
exactly what is written there:
1. http://www.jython.org/archive/21/docs/zxjdbc.html



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Re: python error PLS-00306: wrong number or types of arguments in

[John Gordon]

In 86b9e6f2-e18e-41b9-92a2-86ea8d7b4...@f35g2000vbr.googlegroups.com Adeoluwa 
Odein stratfordtena...@gmail.com writes:

 The same error. The sample were found on the following site --I copied
 exactly what is written there:
 1. http://www.jython.org/archive/21/docs/zxjdbc.html

Ah, I see.  You're supposed to call c.fetchall() afterwards to retrieve
the OUT parameter.

Also, the example page defines the called object as a function, not a
procedure.  Maybe that's the problem?  Try defining RS22 as a function
and see if that helps.

You might also try defining it outside of a package, as that is how the
example code does it.

-- 
John Gordon   A is for Amy, who fell down the stairs
gor...@panix.com  B is for Basil, assaulted by bears
-- Edward Gorey, The Gashlycrumb Tinies

-- 
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Re: python error PLS-00306: wrong number or types of arguments in

[Adeoluwa Odein]

On Jul 13, 5:02 pm, John Gordon gor...@panix.com wrote:
 In 86b9e6f2-e18e-41b9-92a2-86ea8d7b4...@f35g2000vbr.googlegroups.com 
 Adeoluwa Odein stratfordtena...@gmail.com writes:

  The same error. The sample were found on the following site --I copied
  exactly what is written there:
  1.http://www.jython.org/archive/21/docs/zxjdbc.html

if you define the function in the execute() method, it works (as seen
on the page).  But this is a stored procedure already residing on the
DB.  A function/procedure outside of a package, actually works, but
then you lose access to private data; which is while I used a package.



 Ah, I see.  You're supposed to call c.fetchall() afterwards to retrieve
 the OUT parameter.

 Also, the example page defines the called object as a function, not a
 procedure.  Maybe that's the problem?  Try defining RS22 as a function
 and see if that helps.

 You might also try defining it outside of a package, as that is how the
 example code does it.

 --
 John Gordon                   A is for Amy, who fell down the stairs
 gor...@panix.com              B is for Basil, assaulted by bears
                                 -- Edward Gorey, The Gashlycrumb Tinies

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Re: python error PLS-00306: wrong number or types of arguments in

[Terry Reedy]

On 7/13/2011 4:33 PM, Adeoluwa Odein wrote:


The same error. The sample were found on the following site --I copied
exactly what is written there:
1. http://www.jython.org/archive/21/docs/zxjdbc.html


The jython-users mailing list might be a better place to ask your 
question. Most people here are CPython users.


http://sourceforge.net/mail/?group_id=12867

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Re: python error PLS-00306: wrong number or types of arguments in

[John Gordon]

In 0730c5fb-3b65-45ce-9cc5-69d639f48...@g2g2000vbl.googlegroups.com Adeoluwa 
Odein stratfordtena...@gmail.com writes:

 if you define the function in the execute() method, it works (as seen
 on the page).  But this is a stored procedure already residing on the
 DB.  A function/procedure outside of a package, actually works, but
 then you lose access to private data; which is while I used a package.

Did you try changing RS22 from a procedure to a function inside the
package?

-- 
John Gordon   A is for Amy, who fell down the stairs
gor...@panix.com  B is for Basil, assaulted by bears
-- Edward Gorey, The Gashlycrumb Tinies

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Re: python error PLS-00306: wrong number or types of arguments in

[Adeoluwa Odein]

On Jul 13, 5:19 pm, John Gordon gor...@panix.com wrote:
 In 0730c5fb-3b65-45ce-9cc5-69d639f48...@g2g2000vbl.googlegroups.com 
 Adeoluwa Odein stratfordtena...@gmail.com writes:

  if you define the function in the execute() method, it works (as seen
  on the page).  But this is a stored procedure already residing on the
  DB.  A function/procedure outside of a package, actually works, but
  then you lose access to private data; which is while I used a package.

 Did you try changing RS22 from a procedure to a function inside the
 package?

 --
 John Gordon                   A is for Amy, who fell down the stairs
 gor...@panix.com              B is for Basil, assaulted by bears
                                 -- Edward Gorey, The Gashlycrumb Tinies

Correction, the previous actually works, and still gives me access to
private data.  So I will most likely use it.
Basically, just call a function, outside a package.  It resolves this
entire dilemma.
Implementing similar program in Perl DBI, works without any problem.
Python/Jython seem quite difficult to work with Store Procedures, in
my opinion.  Thanks a lot.
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Re: python error PLS-00306: wrong number or types of arguments in

[Adeoluwa Odein]

On Jul 13, 5:19 pm, John Gordon gor...@panix.com wrote:
 In 0730c5fb-3b65-45ce-9cc5-69d639f48...@g2g2000vbl.googlegroups.com 
 Adeoluwa Odein stratfordtena...@gmail.com writes:

  if you define the function in the execute() method, it works (as seen
  on the page).  But this is a stored procedure already residing on the
  DB.  A function/procedure outside of a package, actually works, but
  then you lose access to private data; which is while I used a package.

 Did you try changing RS22 from a procedure to a function inside the
 package?

 --
 John Gordon                   A is for Amy, who fell down the stairs
 gor...@panix.com              B is for Basil, assaulted by bears
                                 -- Edward Gorey, The Gashlycrumb Tinies

The same problem, if done inside a package.  I just left it outside a
package, and it works.
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Re: Python Error from Apress book

[Gabriel Genellina]

En Wed, 08 Jul 2009 06:35:54 -0300, Dave Angel da...@ieee.org escribió:

Gabriel Genellina wrote:

Jul 2009 09:55:13 -0300, Dave Angel da...@ieee.org escribió:

Gabriel Genellina wrote:
En Mon, 06 Jul 2009 19:56:40 -0300, matt0177 matt0...@gmail.com  
escribió:



When I try to run the command as outlined in
the book simple_markup2.py  test_input.txt  test_output.html i  
get the

following error every time.

IOError: [Errno 9] Bad file descriptor


I think the error depends on the specific OS version/service pack. But  
at least on XP this appears to fix it:


http://support.microsoft.com/kb/321788/en-us

Thanks for the link.  Looking at that one, it indicates that Windows  
2000 fixed it in SP4, and XP fixed it in Sp1.  But I'm already running  
XP SP3, so I wonder if it's something new.


I'm using XP SP3 too. Before applying the registry fix, stdout and stderr  
were working fine, but not stdin. After making the registry change, stdin  
works too.
I didn't notice the issue with stdin until now (I don't use stdin very  
often)


--
Gabriel Genellina

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Re: Python Error from Apress book

[Dave Angel]

Gabriel Genellina wrote:
div class=moz-text-flowed style=font-family: -moz-fixedEn Tue, 
07 Jul 2009 09:55:13 -0300, Dave Angel da...@ieee.org escribió:

Gabriel Genellina wrote:
En Mon, 06 Jul 2009 19:56:40 -0300, matt0177 matt0...@gmail.com 
escribió:



When I try to run the command as outlined in
the book simple_markup2.py  test_input.txt  test_output.html i 
get the

following error every time.

IOError: [Errno 9] Bad file descriptor


That's a Windows problem. When you execute the script as itself 
(either as you do in the command line, or by double-clicking on it), 
it doesn't have valid standard handles.

You have to invoke Python explicitely:

python simple_markup2.py  test_input.txt  test_output.html

(you may need to specify the full path to python.exe, or add the 
directory where Python is installed to your system PATH).


I use stdout this way all the time, with no problem (python 2.6, 
Windows XP).  But as you point out, stdin redirection doesn't seem to 
work using the file associations.  I do get a different error though. 
When I look at sys.stdin, it shows an open file, with handle of zero, 
as expected.  But when I do a raw_input(), it gets:

 EOFError: EOF when reading a line


I think the error depends on the specific OS version/service pack. But 
at least on XP this appears to fix it:


http://support.microsoft.com/kb/321788/en-us

Thanks for the link.  Looking at that one, it indicates that Windows 
2000 fixed it in SP4, and XP fixed it in Sp1.  But I'm already running 
XP SP3, so I wonder if it's something new.


Matt, what OS version are you running, and exactly what is happening 
when the error occurs?  (you should be able to figure that out from the 
stack trace)



DaveA
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Re: Python Error from Apress book

[Matthew Edmondson]

I'm running XP SP3. The program now works great from either of the
directories, as long as include 'python' before it. As far as looking at the
error with stack trace, I really don't know enough yet to know how to do
that. I'm running the file from command line, because I'm not sure how to
run it referencing other files from idle. Lot to learn.

Once again, thanks a ton for all of the help.

Matt

On Wed, Jul 8, 2009 at 2:35 AM, Dave Angel da...@ieee.org wrote:



 Gabriel Genellina wrote:

 div class=moz-text-flowed style=font-family: -moz-fixedEn Tue, 07
 Jul 2009 09:55:13 -0300, Dave Angel da...@ieee.org escribió:

 Gabriel Genellina wrote:

 En Mon, 06 Jul 2009 19:56:40 -0300, matt0177 matt0...@gmail.com
 escribió:


  When I try to run the command as outlined in
 the book simple_markup2.py  test_input.txt  test_output.html i get
 the
 following error every time.

 IOError: [Errno 9] Bad file descriptor


 That's a Windows problem. When you execute the script as itself (either
 as you do in the command line, or by double-clicking on it), it doesn't 
 have
 valid standard handles.
 You have to invoke Python explicitely:

 python simple_markup2.py  test_input.txt  test_output.html

 (you may need to specify the full path to python.exe, or add the
 directory where Python is installed to your system PATH).

  I use stdout this way all the time, with no problem (python 2.6,
 Windows XP).  But as you point out, stdin redirection doesn't seem to work
 using the file associations.  I do get a different error though. When I look
 at sys.stdin, it shows an open file, with handle of zero, as expected.  But
 when I do a raw_input(), it gets:
 EOFError: EOF when reading a line


 I think the error depends on the specific OS version/service pack. But at
 least on XP this appears to fix it:

 http://support.microsoft.com/kb/321788/en-us

  Thanks for the link.  Looking at that one, it indicates that Windows 2000
 fixed it in SP4, and XP fixed it in Sp1.  But I'm already running XP SP3, so
 I wonder if it's something new.

 Matt, what OS version are you running, and exactly what is happening when
 the error occurs?  (you should be able to figure that out from the stack
 trace)


 DaveA

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Re: Python Error from Apress book

[Dave Angel]

Gabriel Genellina wrote:
div class=moz-text-flowed style=font-family: -moz-fixedEn Mon, 
06 Jul 2009 19:56:40 -0300, matt0177 matt0...@gmail.com escribió:



When I try to run the command as outlined in
the book simple_markup2.py  test_input.txt  test_output.html i get 
the

following error every time.

IOError: [Errno 9] Bad file descriptor


That's a Windows problem. When you execute the script as itself 
(either as you do in the command line, or by double-clicking on it), 
it doesn't have valid standard handles.

You have to invoke Python explicitely:

python simple_markup2.py  test_input.txt  test_output.html

(you may need to specify the full path to python.exe, or add the 
directory where Python is installed to your system PATH).


I use stdout this way all the time, with no problem (python 2.6, Windows 
XP).  But as you point out, stdin redirection doesn't seem to work using 
the file associations.  I do get a different error though. When I look 
at sys.stdin, it shows an open file, with handle of zero, as expected.  
But when I do a raw_input(), it gets:

EOFError: EOF when reading a line


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Re: Python Error from Apress book

[matt0177]

Adding the python before the command line didn't work at first, but upon
moving the files to the c:\python25 it worked like a champ. Thank you both
for the help. Very frustrating to run into stuff like this when you're first
trying to learn a knew language, it really throws off your momentum!
-- 
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Sent from the Python - python-list mailing list archive at Nabble.com.

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Re: Python Error from Apress book

[Dave Angel]

matt0177 wrote:

Adding the python before the command line didn't work at first, but upon
moving the files to the c:\python25 it worked like a champ. Thank you both
for the help. Very frustrating to run into stuff like this when you're first
trying to learn a knew language, it really throws off your momentum!
  
I'm glad you got things working.  But you really shouldn't need to add 
your own files to the installation directory.  What you need is 
straightforward, but the details are Windows specific


The following is all at the command prompt, not inside Python.

You have a PATH environment variable, with various directories on it.  
Type it out using the PATH command.  Pick a location on it, and add a 
batch file we'll write below.  It's also possible to add a new directory 
to the PATH, using the control panel.  Normally, the first thing I do on 
a new machine is add two directories to the PATH, perhaps  c:\bin  and 
c:\bat.  The former is for the simple one-file utilities you accumulate 
over the years, and the latter is for batch files.  If you want to 
pursue this, let me know, and I'll give details.


Now that you've picked a location for your batch file, let's create it, 
calling it   Python25.bat   You could just call it Python.bat, but this 
way, you can have more than one Python installed, and choose between them.


The contents of Python25.bat are a single line:

@c:\python25\python.exe  %*

The leading @ says we don't wan the line echoed to the screen.  If 
you're unsure of yourself, you can leave it off till everything works 
well, then add it in.  The %* says to copy all the arguments you pass 
the batch file into the executable.


Once this batch file is stored in your PATH, you can just type something 
like:


 python25  myscript.py   arg1 arg2

or, to run the interpreter itself,
python25

DaveA

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Re: Python Error from Apress book

[Dave Angel]

Matthew Edmondson wrote:

Thanks a ton for the help. At first adding the path didn't work, but after
restarting my computer, ran like a champ :)

Hopefully I can get decent with this language one day!

  
All you needed was to restart the DOS-box (Command Prompt), after you 
did the control-panel thing.  Those changes don't affect currently 
running processes.


.
By the way, those standalone executables could very well be python 
scripts.  Except for input redirection, all my single-file scripts work 
fine stored there.  And if you add  .py and .pyw to the PATHEXT 
environment variable, you can run them without extension, so they're 
pretty much interchangeable with .exe files.


So I have a script called digest.py, and I run it from a directory I 
want to analyze, by just typing

   digest  .


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Re: Python Error from Apress book

[Gabriel Genellina]

En Tue, 07 Jul 2009 09:55:13 -0300, Dave Angel da...@ieee.org escribió:

Gabriel Genellina wrote:
En Mon, 06 Jul 2009 19:56:40 -0300, matt0177 matt0...@gmail.com  
escribió:



When I try to run the command as outlined in
the book simple_markup2.py  test_input.txt  test_output.html i get  
the

following error every time.

IOError: [Errno 9] Bad file descriptor


That's a Windows problem. When you execute the script as itself (either  
as you do in the command line, or by double-clicking on it), it doesn't  
have valid standard handles.

You have to invoke Python explicitely:

python simple_markup2.py  test_input.txt  test_output.html

(you may need to specify the full path to python.exe, or add the  
directory where Python is installed to your system PATH).


I use stdout this way all the time, with no problem (python 2.6, Windows  
XP).  But as you point out, stdin redirection doesn't seem to work using  
the file associations.  I do get a different error though. When I look  
at sys.stdin, it shows an open file, with handle of zero, as expected.   
But when I do a raw_input(), it gets:

 EOFError: EOF when reading a line


I think the error depends on the specific OS version/service pack. But at  
least on XP this appears to fix it:


http://support.microsoft.com/kb/321788/en-us

--
Gabriel Genellina

--
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Re: Python Error from Apress book

[Gabriel Genellina]

En Mon, 06 Jul 2009 19:56:40 -0300, matt0177 matt0...@gmail.com escribió:


When I try to run the command as outlined in
the book simple_markup2.py  test_input.txt  test_output.html i get the
following error every time.

IOError: [Errno 9] Bad file descriptor


That's a Windows problem. When you execute the script as itself (either as  
you do in the command line, or by double-clicking on it), it doesn't have  
valid standard handles.

You have to invoke Python explicitely:

python simple_markup2.py  test_input.txt  test_output.html

(you may need to specify the full path to python.exe, or add the directory  
where Python is installed to your system PATH).


--
Gabriel Genellina

--
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Re: Python error on Mac

[Jay Loden]

Clover wrote:
 When trying to do some things on my Mac (starting Lyx, compiling Latex 
 via TextMate) I get this error:
 
 python: execv: 
 /Library/Frameworks/Python.framework/Versions/2.5/Resources/Python.app/Contents/MacOS/Python:
  
 No such file or directory
 
 I (and people on Lyx and TextMate lists) are at a complete loss as to 
 why this is happening. I didn't (at least intentionally) fiddle with 
 Python setup.
 
 Thanks!

what is the output of 'which python' - this should show what python executable 
is running: 

[EMAIL PROTECTED] jloden]$ which python
/Library/Frameworks/Python.framework/Versions/Current/bin/python

You should then check the output of ls -l agains the value of the above: 

[EMAIL PROTECTED] jloden]$ ls -l 
/Library/Frameworks/Python.framework/Versions/Current/bin/python
lrwxr-xr-x   1 root  admin  9 Jul 14 01:53 
/Library/Frameworks/Python.framework/Versions/Current/bin/python - python2.5

That will show what the executable is actually linked to. 

Other thoughts would be to check if the 
/Library/Frameworks/Python.framework/Versions/2.5/Resources/Python.app/Contents/MacOS/Python
 directory exists, or even if 
/Library/Frameworks/Python.framework/Versions/2.5/ exists. Perhaps you are 
trying to execute Python 2.5 but don't actually have it installed? 

-Jay
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Re: Python error on Mac

[Graham Dumpleton]

On Aug 26, 12:58 pm, Clover [EMAIL PROTECTED] wrote:
 When trying to do some things on my Mac (starting Lyx, compiling Latex
 via TextMate) I get this error:

 python: execv:
 /Library/Frameworks/Python.framework/Versions/2.5/Resources/Python.app/Contents/MacOS/Python:
 No such file or directory

 I (and people on Lyx and TextMate lists) are at a complete loss as to
 why this is happening. I didn't (at least intentionally) fiddle with
 Python setup.

The default operating system supplied version of Python on recent
versions of MacOS X is 2.3.5. Unless you have specifically installed
2.5, it will not exist. So, if those applications have it hardwired to
use Python 2.5 they will not work.

Graham

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Re: Python Error :(

[Jarek Zgoda]

Legend napisał(a):

 I wasn't able to run a Python script. But then later I was able to run
 it through the Shell. I was experimenting with cron jobs and set up
 the python execution in as a cron. The first time it ran, It was fine
 but then after that, it started giving me some errors. Now when I try
 to run the script directly, I get the following error:
 
 
 
 Traceback (most recent call last):
   File stdin, line 1, in ?
   File userbot.py, line 637, in ?
 con = connect()
   File userbot.py, line 607, in connect
 con.requestRoster()
   File user.py, line 531, in requestRoster
 self.SendAndWaitForResponse(rost_iq)
   File user.py, line 326, in SendAndWaitForResponse
 return self.waitForResponse(ID)
   File user.py, line 300, in waitForResponse
 self.process(1)
   File xmlstream.py, line 459, in process
 if not len(self.read()): # length of 0 means disconnect
   File xmlstream.py, line 398, in read
 data_in=data_in+self._sslObj.read(BLOCK_SIZE).decode('utf-8')
 socket.sslerror: (6, 'TLS/SSL connection has been closed')
 
 
 Any help please?

Yes.

-- 
Jarek Zgoda

We read Knuth so you don't have to.
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Re: Python Error :(

[kyosohma]

On Mar 27, 8:19 am, Legend [EMAIL PROTECTED] wrote:
 I wasn't able to run a Python script. But then later I was able to run
 it through the Shell. I was experimenting with cron jobs and set up
 the python execution in as a cron. The first time it ran, It was fine
 but then after that, it started giving me some errors. Now when I try
 to run the script directly, I get the following error:

 Traceback (most recent call last):
   File stdin, line 1, in ?
   File userbot.py, line 637, in ?
 con = connect()
   File userbot.py, line 607, in connect
 con.requestRoster()
   File user.py, line 531, in requestRoster
 self.SendAndWaitForResponse(rost_iq)
   File user.py, line 326, in SendAndWaitForResponse
 return self.waitForResponse(ID)
   File user.py, line 300, in waitForResponse
 self.process(1)
   File xmlstream.py, line 459, in process
 if not len(self.read()): # length of 0 means disconnect
   File xmlstream.py, line 398, in read
 data_in=data_in+self._sslObj.read(BLOCK_SIZE).decode('utf-8')
 socket.sslerror: (6, 'TLS/SSL connection has been closed')

 Any help please?

I'll hazard a guess: Are you opening the socket explicitly when you
run this script?  If not, be sure to do so. And when you are finished
doing whatever it is you're doing, be sure to close it as well. You
may need to put in some kind of logic to check if the socket is still
open if you are transferring large files.

Mike

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Re: python Error: IndentationError: expected an indented block

[Vyacheslav Sotnikov]

Antonios Katsikadamos пишет:
 hi all. I am using python 2.4. I have to run an older python code and when i 
 run it i get the following message
 
 IndentationError: expected an indented block.
 
 1)what does this mean?

http://www.python.org/doc/2.4.3/ref/indentation.html

 2)how can i overcome this problem

By syntax fixing

 
 
 Thanks for any advice.
 
 kind regards,
 
 Antonios
  
 -
 Sponsored Link
 
 Free Uniden 5.8GHz Phone System with Packet8 Internet Phone Service
 
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Re: python Error: IndentationError: expected an indented block

[Ben Finney]

Please don't post HTML message bodies to a public forum.

Antonios Katsikadamos [EMAIL PROTECTED] writes:

 hi all. I am using python 2.4. I have to run an older python code
 and when i run it i get the following message
 IndentationError: expected an indented block.
 1)what does this mean?

It's self-explanatory. There's an error in the indentation; Python was
expecting an indented block, but didn't get one.

 2)how can i overcome this problem

Fix the indentation. As you probably know, in Python, indentation is
syntactically significant information to both the programmer and to
the interpreter. If that information is lost, Python can't know what
was meant, and refuses to guess.

Probably something has mangled the white-space in the program
file. Either fix it manually, or go back to a more canonical form of
the file and see if it's been altered.

-- 
 \  I have a large seashell collection, which I keep scattered on |
  `\the beaches all over the world. Maybe you've seen it.  -- |
_o__)Steven Wright |
Ben Finney

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