Re: multiple versions of python

2015-01-05 Thread Boruch Baum 
Thanks, Stanley!


On 01/04/2015 10:32 AM, Stanley C. Kitching wrote:
> 
> 
>> 
>> 1] Can I have multiple versions of python simultaneously?
>> 
> 
>   yes
> 
>   Using Debian Wheezy I have 3 python versions installed
> 
> # ls -1 /usr/lib | grep python | grep -v lib
> 
> python
> python2.6
> python2.7
> python3
> python3.2
> 
> python  is python2.7
> python3 is python3.2
>   
> ===
> 
>> 2] Is there a way to specify that one package 
>> use a non-default version of python ? 
>> 
> 
>   yes
> 
>   Use the specific python version name
>   when starting your program
> 
> pythonX.Y /path/to/zProgram.py
> 
>   For example, I have a small program
>   that only prints the current python version
>   that it has been started with  
> 
>   $ python $p/amisc/version.py
> 
>   python version  2.7.3
> 
>   $ python2.6 $p/amisc/version.py
> 
>   python version  2.6.8
>  
>   $ python2.7 $p/amisc/version.py
> 
>   python version  2.7.3
> 
>   $ python3 $p/amisc/version.py
> 
>   python version  3.2.3
> 
>   $ python3.2 $p/amisc/version.py
> 
>   python version  3.2.3
> 
> 
>   Using the name python is the same 
>   as using the name python2.7
> 
> python2.7 is the default version
> 
>   Using the name python3 is the same
>   as using the name python3.2
> 
> ===
> 
>> 3] Is this a quick, straightforward install ? 
>> 
> 
>   yes
> 
>   Use the Debian package manager
>   to install the different python versions
> 
>   # sudo apt-get install python
> 
>   # sudo apt-get install python3
> 
>   If you start your python programs
>   using specific python version names
>   nothing else should be necessary 
> 
> 


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Re: multiple versions of python

2015-01-04 Thread Cousin Stanley 

> 
> 1] Can I have multiple versions of python simultaneously?
> 

  yes

  Using Debian Wheezy I have 3 python versions installed

# ls -1 /usr/lib | grep python | grep -v lib

python
python2.6
python2.7
python3
python3.2

python  is python2.7
python3 is python3.2
  
===

> 2] Is there a way to specify that one package 
> use a non-default version of python ? 
> 

  yes

  Use the specific python version name
  when starting your program

pythonX.Y /path/to/zProgram.py

  For example, I have a small program
  that only prints the current python version
  that it has been started with  

  $ python $p/amisc/version.py

  python version  2.7.3

  $ python2.6 $p/amisc/version.py

  python version  2.6.8
 
  $ python2.7 $p/amisc/version.py

  python version  2.7.3

  $ python3 $p/amisc/version.py

  python version  3.2.3

  $ python3.2 $p/amisc/version.py

  python version  3.2.3


  Using the name python is the same 
  as using the name python2.7

python2.7 is the default version

  Using the name python3 is the same
  as using the name python3.2

===

> 3] Is this a quick, straightforward install ? 
> 

  yes

  Use the Debian package manager
  to install the different python versions

  # sudo apt-get install python

  # sudo apt-get install python3

  If you start your python programs
  using specific python version names
  nothing else should be necessary 


-- 
Stanley C. Kitching
Human Being
Phoenix, Arizona


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Re: multiple versions of python

2015-01-04 Thread Diogene Laerce 

On 12/29/2014 09:17 PM, Boruch Baum wrote:
> Hello everyone,
>
> I'm preparing two bug reports, and in trying to sort one of them out, it
> seems that it may be linked to an incompatibility of a script with
> python2.7 (see bug #659831). So, in test that possibility, what I would
> like to do is install some other version of python (I see 2.5 and 2.6 in
> the repositories), in order to see whether the package works with
> another version.
>
> My questions revolve around how time-consuming and worthwhile this
> exercise will be:
>
> 1] Can I have multiple versions of python simultaneously?

You should give a try to pew which gives more features than virtualenv :

https://pypi.python.org/pypi/pew/

Best regards,

-- 
“One original thought is worth a thousand mindless quotings.”
“Le vrai n'est pas plus sûr que le probable.”

  Diogene Laerce




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Re: multiple versions of python

2014-12-30 Thread Rusi Mody 
On Wednesday, December 31, 2014 12:00:05 AM UTC+5:30, Boruch Baum wrote:
> Thanks. Are you recommending virtualenv from experience having used it,
> or from heresay? 


In general there is a spectrum for resources 
In decreasing order of weight
1. Buy a new machine
2. Use a VM
3. Use docker
4. Use virtualenv

You may find 3 suitable:
https://www.docker.com/

There are probably more points in the spectrum between 2 and 3
[chroot jails??]




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Re: multiple versions of python

2014-12-30 Thread Boruch Baum 
Thanks. Are you recommending virtualenv from experience having used it,
or from heresay? I would want to know what possible pitfalls and gotchas
there might be. Specifically, the description for the package says that
it creates "... virtual Python instances, each invokable  with its own
Python executable.  Each instance can have different sets of
modules...", but I'm not looking for running two instances with
individual custom modules or libraries - I think I'm looking at having
two ENTIRE python tool-chains (v2.7 & v2.6). So, I would be asking
virtualenv, a python2.7 package itself, to be running an entire
python2.6 instance. Would that be in the scope of solution you've suggested?


On 12/29/2014 04:30 PM, Alex Mestiashvili wrote:
> On 12/29/2014 09:17 PM, Boruch Baum wrote:
>> Hello everyone,
>>
>> I'm preparing two bug reports, and in trying to sort one of them out, it
>> seems that it may be linked to an incompatibility of a script with
>> python2.7 (see bug #659831). So, in test that possibility, what I would
>> like to do is install some other version of python (I see 2.5 and 2.6 in
>> the repositories), in order to see whether the package works with
>> another version.
>>
>> My questions revolve around how time-consuming and worthwhile this
>> exercise will be:
>>
>> 1] Can I have multiple versions of python simultaneously?
>>
>> 2] Is there a way to specify that one package use a non-default version
>> of python? (I don't want to set an old version of python as default, if
>> that risks having other packages, depending on 2.7, break).
>>
>> 3] Is this a quick, straightforward install? Or is it going to be
>> something like an emacs install, with all kinds of time-consuming,
>> interminable local compilations and configurations?
>>
>> Please respond to me directly, and on list. Thanks.
> 
> It sounds like you need virtualenv: https://pypi.python.org/pypi/virtualenv
> 
> Regards,
> Alex


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Re: multiple versions of python

2014-12-29 Thread Alex Mestiashvili 

On 12/29/2014 09:17 PM, Boruch Baum wrote:

Hello everyone,

I'm preparing two bug reports, and in trying to sort one of them out, it
seems that it may be linked to an incompatibility of a script with
python2.7 (see bug #659831). So, in test that possibility, what I would
like to do is install some other version of python (I see 2.5 and 2.6 in
the repositories), in order to see whether the package works with
another version.

My questions revolve around how time-consuming and worthwhile this
exercise will be:

1] Can I have multiple versions of python simultaneously?

2] Is there a way to specify that one package use a non-default version
of python? (I don't want to set an old version of python as default, if
that risks having other packages, depending on 2.7, break).

3] Is this a quick, straightforward install? Or is it going to be
something like an emacs install, with all kinds of time-consuming,
interminable local compilations and configurations?

Please respond to me directly, and on list. Thanks.


It sounds like you need virtualenv: https://pypi.python.org/pypi/virtualenv

Regards,
Alex


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multiple versions of python

2014-12-29 Thread Boruch Baum 
Hello everyone,

I'm preparing two bug reports, and in trying to sort one of them out, it
seems that it may be linked to an incompatibility of a script with
python2.7 (see bug #659831). So, in test that possibility, what I would
like to do is install some other version of python (I see 2.5 and 2.6 in
the repositories), in order to see whether the package works with
another version.

My questions revolve around how time-consuming and worthwhile this
exercise will be:

1] Can I have multiple versions of python simultaneously?

2] Is there a way to specify that one package use a non-default version
of python? (I don't want to set an old version of python as default, if
that risks having other packages, depending on 2.7, break).

3] Is this a quick, straightforward install? Or is it going to be
something like an emacs install, with all kinds of time-consuming,
interminable local compilations and configurations?

Please respond to me directly, and on list. Thanks.

For background, the python bug is in package reportbug, WHEN BEING USED
IN TEXT MODE (See below for version information):

$ reportbug --ui=text libpam-mount

Traceback (most recent call last):
  File "/usr/bin/reportbug", line 38, in 
from reportbug import utils
  File "/usr/lib/python2.7/dist-packages/reportbug/utils.py", line 70,
in 
import debbugs
  File "/usr/lib/python2.7/dist-packages/reportbug/debbugs.py", line 40,
in 
import debianbts
  File "/usr/lib/pymodules/python2.7/debianbts.py", line 33, in 
import SOAPpy
  File "usr/lib/python2.7/dist-packages/SOAPpy__init__.py", line 5, in

from Client  import *
  File "/usr/lib/python2.7/dist-packages/SOAPpy/Client.py", line 59, in

from Parser  import parseSOAPRPC
  File "/usr/lib/python2.7/dist-packages/SOAPpy/Parser.py", line 10, in

from wstools.XMLname import fromXMLname
  File "usr/lib/python2.7/dist-packages/wstools__init__.py", line 6,
in 
import WSDLTools
  File "/usr/lib/python2.7/dist-packages/wstools/WSDLTools.py", line 15,
in 
from Utility import Collection, CollectionNS, DOM, ElementProxy,
basejoin
  File "/usr/lib/python2.7/dist-packages/wstools/Utility.py", line 30,
in 
from httplib import HTTPConnection, HTTPSConnection
ImportError: cannot import name HTTPSConnection



dpkg -l |grep reportbug
4715:ii  python-reportbug
6.6.1  all  Python modules for
interacting with bug tracking systems
4951:ii  reportbug
6.6.1  all  reports bugs in the
Debian distribution



dpkg -l |grep python2.7
3170:ii  libpython2.7:amd64
2.7.8-11   amd64Shared Python
runtime library (version 2.7)
3171:ii  libpython2.7-dbg:amd64
2.7.8-11   amd64Debug Build of the
Python Interpreter (version 2.7)
3172:ii  libpython2.7-dev:amd64
2.7.8-11   amd64Header files and a
static library for Python (v2.7)
3173:ii  libpython2.7-minimal:amd64
2.7.8-11   amd64Minimal subset of
the Python language (version 2.7)
3174:ii  libpython2.7-stdlib:amd64
2.7.8-11   amd64Interactive
high-level object-oriented language (standard library, version 2.7)
4795:ii  python2.7
2.7.8-11   amd64Interactive
high-level object-oriented language (version 2.7)
4796:ii  python2.7-dbg
2.7.8-11   amd64Debug Build of the
Python Interpreter (version 2.7)
4797:ii  python2.7-dev
2.7.8-11   amd64Header files and a
static library for Python (v2.7)
4798:ii  python2.7-doc
2.7.8-11   all  Documentation for
the high-level object-oriented language Python (v2.7)
4799:ii  python2.7-examples
2.7.8-11   all  Examples for the
Python language (v2.7)
4800:ii  python2.7-minimal
2.7.8-11   amd64Minimal subset of
the Python language (version 2.7)





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