Help with loading file into an array
Hi all I am trying to build a program that can find comets in a series of astronomical images. I have already written functions to find the comet in a series of images, the data of which is stored in embedded lists. The area I am having difficulty with is take a standard gif file (1024 x 1024) and reading it into an array or embedded lists. In a nutshell here is an example of what I want to do Let's say I have a gif file called 20130428__c2_1024.gif in a folder called c:\comets I want to read the data from that gif file taking the red data (excluding the green and blue data) and store that in an array called Image[][] which is a nested array length 1024 with a list in each item of 1024 length (ie 1024 x 1024) Could someone please provide a piece of code to do the above so I can then go on to modify it to pick up different files from different folders? In particular I am keen to seen how you read in the data and also how you change the directory from which you are reading the image. For the record this is not for homework but is a pet project of mine. I have already written a version of the program in Justbasic but python is faster. I am also interested in readers views as to which is the simplest and best way to achieve what I am trying to do. Thanks Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: Help with loading file into an array
Using a nested array should waste a lot of memory. I think you should use PIL to load and read the image. I want to read the data from that gif file taking the red data (excluding the green and blue data) and store that in an array called Image[][] which is a nested array length 1024 with a list in each item of 1024 length (ie 1024 x 1024) -- http://mail.python.org/mailman/listinfo/python-list
Re: Help with loading file into an array
On 05/05/2013 3:43 AM, Fábio Santos wrote: Using a nested array should waste a lot of memory. I think you should use PIL to load and read the image. I want to read the data from that gif file taking the red data (excluding the green and blue data) and store that in an array called Image[][] which is a nested array length 1024 with a list in each item of 1024 length (ie 1024 x 1024) Fabio, Have you considered numpy? Colin W. -- http://mail.python.org/mailman/listinfo/python-list
Re: Help with loading file into an array
peter berrett pwberr...@gmail.com wrote: I am trying to build a program that can find comets in a series of astronomical images. I have already written functions to find the comet in a series of images, the data of which is stored in embedded lists. The area I am having difficulty with is take a standard gif file (1024 x 1024) and reading it into an array or embedded lists. In a nutshell here is an example of what I want to do Let's say I have a gif file called 20130428__c2_1024.gif in a folder called c:\comets I want to read the data from that gif file taking the red data (excluding the green and blue data) and store that in an array called Image[][] which is a nested array length 1024 with a list in each item of 1024 length (ie 1024 x 1024) Could someone please provide a piece of code to do the above so I can then go on to modify it to pick up different files from different folders? In particular I am keen to seen how you read in the data and also how you change the directory from which you are reading the image. the following should do the trick using, as Fábio already suggested, the Python Image Library (PIL): 8- #!/ur/bin/env python import Image im = Image.open( 'c:/comets/20130428__c2_1024.gif' ) w, h = im.size red_arr = [ ] for y in range( h ) : red_line = [ ] for x in range( w ) : red_line.append( im.getpixel( ( x, y ) )[ 0 ] ) red_arr.append( red_line ) 8- For obvious reasons I couldn't use 'Image' as the name of the list of lists, so it's 'red_arr' instead. This is probably not the fas- test solution, but it's simple and hopefully will get you started. Concerning reading other files: here I may not understand your problem since it looks rather trivial to me by simply passing the open() method of 'Image' the name of a file in a different directory. Regards, Jens -- \ Jens Thoms Toerring ___ j...@toerring.de \__ http://toerring.de -- http://mail.python.org/mailman/listinfo/python-list
Python not starting
I was using python from over an year and half.Suddenly from yesterday i'm unable to run it. The error is as follows Traceback (most recent call last): File C:\Python27\lib\site.py, line 563, in module main() File C:\Python27\lib\site.py, line 546, in main known_paths = addsitepackages(known_paths) File C:\Python27\lib\site.py, line 324, in addsitepackages if os.path.isdir(sitedir): File C:\Python27\lib\genericpath.py, line 44, in isdir return stat.S_ISDIR(st.st_mode) AttributeError: 'module' object has no attribute 'S_ISDIR' -- http://mail.python.org/mailman/listinfo/python-list
Re: Python not starting
In article 9ace60b8-a07d-41bc-ac9f-507f6c61f...@googlegroups.com, rama29...@gmail.com wrote: I was using python from over an year and half.Suddenly from yesterday i'm unable to run it. The error is as follows Traceback (most recent call last): File C:\Python27\lib\site.py, line 563, in module main() File C:\Python27\lib\site.py, line 546, in main known_paths = addsitepackages(known_paths) File C:\Python27\lib\site.py, line 324, in addsitepackages if os.path.isdir(sitedir): File C:\Python27\lib\genericpath.py, line 44, in isdir return stat.S_ISDIR(st.st_mode) AttributeError: 'module' object has no attribute 'S_ISDIR' Just a wild guess, but did you happen to create a module of your own named stat, which is getting imported instead of the one from the library? Try doing: print stat.__file__ and see what it says. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python not starting
On Sunday, May 5, 2013 7:21:59 PM UTC+5:30, Roy Smith wrote: In article 9ace60b8-a07d-41bc-ac9f-507f6c61f...@googlegroups.com, rama29...@gmail.com wrote: I was using python from over an year and half.Suddenly from yesterday i'm unable to run it. The error is as follows Traceback (most recent call last): File C:\Python27\lib\site.py, line 563, in module main() File C:\Python27\lib\site.py, line 546, in main known_paths = addsitepackages(known_paths) File C:\Python27\lib\site.py, line 324, in addsitepackages if os.path.isdir(sitedir): File C:\Python27\lib\genericpath.py, line 44, in isdir return stat.S_ISDIR(st.st_mode) AttributeError: 'module' object has no attribute 'S_ISDIR' Just a wild guess, but did you happen to create a module of your own named stat, which is getting imported instead of the one from the library? Try doing: print stat.__file__ and see what it says. Even from command prompt i can't start python.The error is coming up.Python in Windows7 box. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python not starting
On Sunday, May 5, 2013 7:21:59 PM UTC+5:30, Roy Smith wrote: In article 9ace60b8-a07d-41bc-ac9f-507f6c61f...@googlegroups.com, Just a wild guess, but did you happen to create a module of your own named stat, which is getting imported instead of the one from the library? In article c7c26e78-b786-4205-9ffa-5eb290064...@googlegroups.com, DRJ Reddy rama29...@gmail.com wrote: Even from command prompt i can't start python.The error is coming up.Python in Windows7 box. I don't know Windows, but my guess is still that it's finding some other file called stat.py before it's finding the system library one. Try doing a file system search for all files named stat.py and see what you find. On unix, I would do find / -name stat.py. I assume there's something similar on Windows. The other thing I would try is tracing the python process as it starts up. On unix, I would do something like strace -e trace=file python and see if it's finding a stat.py in some unexpected place. Again, I can only assume there's something similar on Windows. Oh, and please don't post with Google Groups. It double-spaces everything and makes your message really difficult to read. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python not starting
On 05/05/2013 15:00, DRJ Reddy wrote: On Sunday, May 5, 2013 7:21:59 PM UTC+5:30, Roy Smith wrote: In article 9ace60b8-a07d-41bc-ac9f-507f6c61f...@googlegroups.com, rama29...@gmail.com wrote: I was using python from over an year and half.Suddenly from yesterday i'm unable to run it. The error is as follows Traceback (most recent call last): File C:\Python27\lib\site.py, line 563, in module main() File C:\Python27\lib\site.py, line 546, in main known_paths = addsitepackages(known_paths) File C:\Python27\lib\site.py, line 324, in addsitepackages if os.path.isdir(sitedir): File C:\Python27\lib\genericpath.py, line 44, in isdir return stat.S_ISDIR(st.st_mode) AttributeError: 'module' object has no attribute 'S_ISDIR' Just a wild guess, but did you happen to create a module of your own named stat, which is getting imported instead of the one from the library? Try doing: print stat.__file__ and see what it says. Even from command prompt i can't start python.The error is coming up.Python in Windows7 box. Place the call to print stat.__file__ in the file genericpath.py immediately before the line that gives the attribute error. Would you also be kind enough to read and use the guidance given in the link in my signature. My eyesight is bad enough without parsing double spaced stuff courtesy of google groups, thanks. -- If you're using GoogleCrap™ please read this http://wiki.python.org/moin/GoogleGroupsPython. Mark Lawrence -- http://mail.python.org/mailman/listinfo/python-list
Re: Python not starting
On Sunday, May 5, 2013 7:46:48 PM UTC+5:30, Roy Smith wrote: On Sunday, May 5, 2013 7:21:59 PM UTC+5:30, Roy Smith wrote: In article 9ace60b8-a07d-41bc-ac9f-507f6c61f...@googlegroups.com, Just a wild guess, but did you happen to create a module of your own named stat, which is getting imported instead of the one from the library? In article c7c26e78-b786-4205-9ffa-5eb290064...@googlegroups.com, DRJ Reddy rama29...@gmail.com wrote: Even from command prompt i can't start python.The error is coming up.Python in Windows7 box. I don't know Windows, but my guess is still that it's finding some other file called stat.py before it's finding the system library one. Try doing a file system search for all files named stat.py and see what you find. On unix, I would do find / -name stat.py. I assume there's something similar on Windows. The other thing I would try is tracing the python process as it starts up. On unix, I would do something like strace -e trace=file python and see if it's finding a stat.py in some unexpected place. Again, I can only assume there's something similar on Windows. Oh, and please don't post with Google Groups. It double-spaces everything and makes your message really difficult to read. I found a stat.py in python27/idlelib i haven't created one. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python not starting
On Sunday, May 5, 2013 7:56:58 PM UTC+5:30, Mark Lawrence wrote: On 05/05/2013 15:00, DRJ Reddy wrote: On Sunday, May 5, 2013 7:21:59 PM UTC+5:30, Roy Smith wrote: In article 9ace60b8-a07d-41bc-ac9f-507f6c61f...@googlegroups.com, rama29...@gmail.com wrote: I was using python from over an year and half.Suddenly from yesterday i'm unable to run it. The error is as follows Traceback (most recent call last): File C:\Python27\lib\site.py, line 563, in module main() File C:\Python27\lib\site.py, line 546, in main known_paths = addsitepackages(known_paths) File C:\Python27\lib\site.py, line 324, in addsitepackages if os.path.isdir(sitedir): File C:\Python27\lib\genericpath.py, line 44, in isdir return stat.S_ISDIR(st.st_mode) AttributeError: 'module' object has no attribute 'S_ISDIR' Just a wild guess, but did you happen to create a module of your own named stat, which is getting imported instead of the one from the library? Try doing: print stat.__file__ and see what it says. Even from command prompt i can't start python.The error is coming up.Python in Windows7 box. Place the call to print stat.__file__ in the file genericpath.py immediately before the line that gives the attribute error. Would you also be kind enough to read and use the guidance given in the link in my signature. My eyesight is bad enough without parsing double spaced stuff courtesy of google groups, thanks. -- If you're using GoogleCrap� please read this http://wiki.python.org/moin/GoogleGroupsPython. Mark Lawrence Sorry for double spaced stuff,how can i get rid of it. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python not starting
On Mon, May 6, 2013 at 12:16 AM, Roy Smith r...@panix.com wrote: In article c7c26e78-b786-4205-9ffa-5eb290064...@googlegroups.com, DRJ Reddy rama29...@gmail.com wrote: Even from command prompt i can't start python.The error is coming up.Python in Windows7 box. I don't know Windows, but my guess is still that it's finding some other file called stat.py before it's finding the system library one. Try doing a file system search for all files named stat.py and see what you find. On unix, I would do find / -name stat.py. I assume there's something similar on Windows. Or alternatively, disable site.py by invoking python -S, and then manually import stat and see what its file is. ChrisA -- http://mail.python.org/mailman/listinfo/python-list
Re: Python not starting
On Sunday, May 5, 2013 8:30:59 PM UTC+5:30, Chris Angelico wrote: On Mon, May 6, 2013 at 12:16 AM, Roy Smith r...@panix.com wrote: In article c7c26e78-b786-4205-9ffa-5eb290064...@googlegroups.com, DRJ Reddy rama29...@gmail.com wrote: Even from command prompt i can't start python.The error is coming up.Python in Windows7 box. I don't know Windows, but my guess is still that it's finding some other file called stat.py before it's finding the system library one. Try doing a file system search for all files named stat.py and see what you find. On unix, I would do find / -name stat.py. I assume there's something similar on Windows. Or alternatively, disable site.py by invoking python -S, and then manually import stat and see what its file is. ChrisA Thanks all of you,i have done it,by disabling,but what is the permanent solution.How can i start python idle -- http://mail.python.org/mailman/listinfo/python-list
Re: Python not starting
On Mon, May 6, 2013 at 1:11 AM, DRJ Reddy rama29...@gmail.com wrote: On Sunday, May 5, 2013 8:30:59 PM UTC+5:30, Chris Angelico wrote: On Mon, May 6, 2013 at 12:16 AM, Roy Smith r...@panix.com wrote: In article c7c26e78-b786-4205-9ffa-5eb290064...@googlegroups.com, DRJ Reddy rama29...@gmail.com wrote: Even from command prompt i can't start python.The error is coming up.Python in Windows7 box. I don't know Windows, but my guess is still that it's finding some other file called stat.py before it's finding the system library one. Try doing a file system search for all files named stat.py and see what you find. On unix, I would do find / -name stat.py. I assume there's something similar on Windows. Or alternatively, disable site.py by invoking python -S, and then manually import stat and see what its file is. ChrisA Thanks all of you,i have done it,by disabling,but what is the permanent solution.How can i start python idle Here's the steps: 1) Start Python with the -S option. You have apparently figured this part out. This should give you a working interactive Python. 2) Type: import stat stat.__file__ 3) See what the file is that was named there. If you created it, you now know the problem. 4) Read Mark Lawrence's signature. This post adds nothing to what has already been said; it's just coalescing the previously-given advice into exact steps. ChrisA -- http://mail.python.org/mailman/listinfo/python-list
How to avoid PEP8 'imported but unused'
I am new to python. Now, I am woring on an application within Django
framework. When I checked my code with pep8 and pyflakes, some warning
messages show up-'Foobar imported but unused'. Obviously, it indicates
that some modules are imprted to current module but never get
references. However, it seems the message is wrong in this case:
# file: urls.py
urlpattens = patterns(
'',
url('^signup/$', 'signup')
}
# file: register.py
def signup(request):
return ...
# file: views.py
import signup from register
The warning message is shown in file views.py. It seems to me that the
code is okay because Django requires all functions serve as 'view' is
typically go into views.py. 'import' is about get 'signup' function
into module 'views.py'. Or, I am totally wrong? Is there a proper way
to avoid this warnning?
Best regards,
/Adam
--
http://mail.python.org/mailman/listinfo/python-list
learning python
hi guys i need to find a good book to learn python with exercises and solutions, any suggestions? thanks! best regards leonardo-- http://mail.python.org/mailman/listinfo/python-list
Re: How to avoid PEP8 'imported but unused'
I usually do this on pyflakes:
import whatever
assert whatever # silence pyflakes
Pyflakes and pep8 have no way of knowing django will import and use your
module, or whether you are just importing a module for the side effects, so
they issue a warning anyway. Assert'ing counts as using the module, so it
counts as an used import.
On 5 May 2013 17:05, Adam Jiang jiang.a...@gmail.com wrote:
I am new to python. Now, I am woring on an application within Django
framework. When I checked my code with pep8 and pyflakes, some warning
messages show up-'Foobar imported but unused'. Obviously, it indicates
that some modules are imprted to current module but never get
references. However, it seems the message is wrong in this case:
# file: urls.py
urlpattens = patterns(
'',
url('^signup/$', 'signup')
}
# file: register.py
def signup(request):
return ...
# file: views.py
import signup from register
The warning message is shown in file views.py. It seems to me that the
code is okay because Django requires all functions serve as 'view' is
typically go into views.py. 'import' is about get 'signup' function
into module 'views.py'. Or, I am totally wrong? Is there a proper way
to avoid this warnning?
Best regards,
/Adam
--
http://mail.python.org/mailman/listinfo/python-list
--
http://mail.python.org/mailman/listinfo/python-list
Re: How to avoid PEP8 'imported but unused'
On 05/05/2013 17:00, Adam Jiang wrote:
I am new to python. Now, I am woring on an application within Django
framework. When I checked my code with pep8 and pyflakes, some warning
messages show up-'Foobar imported but unused'. Obviously, it indicates
that some modules are imprted to current module but never get
references. However, it seems the message is wrong in this case:
# file: urls.py
urlpattens = patterns(
'',
url('^signup/$', 'signup')
}
# file: register.py
def signup(request):
return ...
# file: views.py
import signup from register
The warning message is shown in file views.py. It seems to me that the
code is okay because Django requires all functions serve as 'view' is
typically go into views.py. 'import' is about get 'signup' function
into module 'views.py'. Or, I am totally wrong? Is there a proper way
to avoid this warnning?
It's not:
import signup from register
(that's an error) but:
from register import signup
After fixing that, does it still show the warning?
--
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Re: Python not starting
Chris i have seen stat.__file__. It gives me 'C:\\Python27\\lib\\stat.pyc'. What should i do now. -- http://mail.python.org/mailman/listinfo/python-list
Re: learning python
A byte of python with learning python by Mark Lutz is a good combination. -- http://mail.python.org/mailman/listinfo/python-list
Re: How to avoid PEP8 'imported but unused'
Adam Jiang wrote:
I am new to python. Now, I am woring on an application within Django
framework. When I checked my code with pep8 and pyflakes, some warning
messages show up-'Foobar imported but unused'. Obviously, it indicates
that some modules are imprted to current module but never get
references. However, it seems the message is wrong in this case:
# file: urls.py
urlpattens = patterns(
'',
url('^signup/$', 'signup')
}
# file: register.py
def signup(request):
return ...
# file: views.py
import signup from register
The warning message is shown in file views.py. It seems to me that the
code is okay because Django requires all functions serve as 'view' is
typically go into views.py. 'import' is about get 'signup' function
into module 'views.py'. Or, I am totally wrong? Is there a proper way
to avoid this warnning?
pylint has a way to suppress such warnings with a comment like
from signup import register # pylint:disable=W0611
but personally I find the magic comment more annoying than the false
warning...
--
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Re: How to avoid PEP8 'imported but unused'
Thanks. It works very well.
One more question. In this particular case it seems 'assert' should be
safe as a workaround, doesn't it? 'assert' will check if the symbol
is imported and not NULL. Is there side effect if I just applied this
rule as a generic one.
/Adam
On Sun, May 05, 2013 at 05:18:40PM +0100, Fábio Santos wrote:
I usually do this on pyflakes:
import whatever
assert whatever # silence pyflakes
Pyflakes and pep8 have no way of knowing django will import and use your
module, or whether you are just importing a module for the side effects, so
they issue a warning anyway. Assert'ing counts as using the module, so it
counts as an used import.
On 5 May 2013 17:05, Adam Jiang jiang.a...@gmail.com wrote:
I am new to python. Now, I am woring on an application within Django
framework. When I checked my code with pep8 and pyflakes, some warning
messages show up-'Foobar imported but unused'. Obviously, it indicates
that some modules are imprted to current module but never get
references. However, it seems the message is wrong in this case:
# file: urls.py
urlpattens = patterns(
'',
url('^signup/$', 'signup')
}
# file: register.py
def signup(request):
return ...
# file: views.py
import signup from register
The warning message is shown in file views.py. It seems to me that the
code is okay because Django requires all functions serve as 'view' is
typically go into views.py. 'import' is about get 'signup' function
into module 'views.py'. Or, I am totally wrong? Is there a proper way
to avoid this warnning?
Best regards,
/Adam
--
http://mail.python.org/mailman/listinfo/python-list
--
http://mail.python.org/mailman/listinfo/python-list
Re: [Python-Help] learning python
On 05/05/2013 10:08 AM, leonardo selmi wrote: hi guys i need to find a good book to learn python with exercises and solutions, any suggestions? thanks! Leonardo, There are several good online tutorials available, many listed here: http://wiki.python.org/moin/BeginnersGuide There is also the Python Tutorial written by the creator of Python here: http://docs.python.org/2/tutorial/index.html If you want a hands on approach with exercises, try Learn Python the Hard Way: http://learnpythonthehardway.org/ If you already have a background in programming I find Dive Into Python to be an excellent introduction: http://www.diveintopython.net/ as well as Think Python: How to Think Like a Computer Scientist: http://www.greenteapress.com/thinkpython/html/ If you want something you can hold in your hand and has paper pages, I can recommend Learning Python by Mark Lutz: http://shop.oreilly.com/product/9780596158071.do followed by The Python Cookbook, by Alex Martelli and David Ascher: http://shop.oreilly.com/product/9780596001674.do The Massachusetts Institute of Technology uses Python to teach their introduction to programming course which is available online (free) here: http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-00sc-introduction-to-computer-science-and-programming-spring-2011/index.htm I hope that helps. Sincerely, e. -- http://mail.python.org/mailman/listinfo/python-list
Why do Perl programmers make more money than Python programmers
According to CIO.com, Python programmers make only $83,000 per year, while Perl programmers make $93,000 per year. http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide10 http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide11 I would like to know, what explains the discrepancy. Thank you! i -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
Most likely more legacy Perl code in mission critical systems S Sent from my pocket UNIVAC. On May 5, 2013, at 10:11 AM, Ignoramus16992 ignoramus16992@NOSPAM.16992.invalid wrote: According to CIO.com, Python programmers make only $83,000 per year, while Perl programmers make $93,000 per year. http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide10 http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide11 I would like to know, what explains the discrepancy. Thank you! i -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
I wouldn't touch perl code with a ten foot pole. On the other hand, python is pleasing to the eye and easy to write, read and modify. This means that you can easily be replaced with someone else who also knows python, so your company doesn't care much about paying you well and keeping you there. On Sun, May 5, 2013 at 6:11 PM, Ignoramus16992 ignoramus16992@nospam.16992.invalid wrote: According to CIO.com, Python programmers make only $83,000 per year, while Perl programmers make $93,000 per year. http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide10 http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide11 I would like to know, what explains the discrepancy. Thank you! i -- http://mail.python.org/mailman/listinfo/python-list -- Fábio Santos -- http://mail.python.org/mailman/listinfo/python-list
Re: How to avoid PEP8 'imported but unused'
That assert will never fail. If the symbol is not imported, the import statement raises ImportError. And actually assert makes sure that the value is not false-ish, not None/Null. And AFAIK a module object is *always* true. One more question. In this particular case it seems 'assert' should be safe as a workaround, doesn't it? 'assert' will check if the symbol is imported and not NULL. Is there side effect if I just applied this rule as a generic one. -- Fábio Santos -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
And seniority combined with annual cost of living raises, due to Perl being in use longer S Sent from my pocket UNIVAC. On May 5, 2013, at 10:11 AM, Ignoramus16992 ignoramus16992@NOSPAM.16992.invalid wrote: According to CIO.com, Python programmers make only $83,000 per year, while Perl programmers make $93,000 per year. http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide10 http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide11 I would like to know, what explains the discrepancy. Thank you! i -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
On Mon, May 6, 2013 at 3:11 AM, Ignoramus16992 ignoramus16992@nospam.16992.invalid wrote: According to CIO.com, Python programmers make only $83,000 per year, while Perl programmers make $93,000 per year. http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide10 http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide11 I would like to know, what explains the discrepancy. Thank you! Once, I was young and foolish too, and an ignoramus, just like you. [1] There's a big problem with comparing statistical averages without any indication of their spread. Suppose these are the salaries involved: Perl = [15000, 3, 8, 10, 143000, 19] Python = [15000, 3, 8, 10, 19] That is, the guy who's making 143K a year didn't mention that he's using Python. Voila! Your averages differ, yet statistically, there's not a lot of difference. The best way to know how useful the averages are is to look at the distribution, eg look at the difference between the highest and lowest values, or the standard deviation of the sample, or something of that sort. Without that, there's no way of knowing whether a 10K difference is at all significant. I would posit that, among salaries, it's meaningless. ChrisA [1] I don't know if you're trolling or not, so I'll give a serious response. But I'm going to start with a quote from Emerald Isle. http://diamond.boisestate.edu/gas/sullivan/emerald_isle/web_opera/ei14.html -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
On May 5, 10:11 pm, Ignoramus16992 ignoramus16...@NOSPAM. 16992.invalid wrote: According to CIO.com, Python programmers make only $83,000 per year, while Perl programmers make $93,000 per year. http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide10http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide11 I would like to know, what explains the discrepancy. Thank you! i I expect Cobol programmers earn more than either Its called supply and demand -- http://mail.python.org/mailman/listinfo/python-list
Re: Python not starting
In article 9d2513ed-2738-4b6f-92af-82c1faa54...@googlegroups.com, DRJ Reddy rama29...@gmail.com wrote: If you're using GoogleCrap� please read this http://wiki.python.org/moin/GoogleGroupsPython. Mark Lawrence Sorry for double spaced stuff,how can i get rid of it. I don't mean to be disrespectful, but did you actually read the page you were asked to read? It says, about halfway down the page, You should remove the excess quoted blank lines before posting. There are several way to do this., and then goes on to describe three different ways. -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
Most likely more legacy Perl code in mission critical systems Which is unfair because when Python is ever surpassed by an even better language/technology then we get paid more to work Python and not move the industry forward by moving to the new technology and hacking on it. -- Fábio Santos -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
In article zrodnzu2u6sydxvmnz2dnuvz_v2dn...@giganews.com, Ignoramus16992 ignoramus16992@NOSPAM.16992.invalid wrote: According to CIO.com, Python programmers make only $83,000 per year, while Perl programmers make $93,000 per year. It's amazing the depths to which people are willing to sink for an extra $10k per year. -- http://mail.python.org/mailman/listinfo/python-list
Re: [Python-Help] learning python
thanks! Il giorno 05/mag/2013, alle ore 18:58, Eric Brunson brun...@brunson.com ha scritto: On 05/05/2013 10:08 AM, leonardo selmi wrote: hi guys i need to find a good book to learn python with exercises and solutions, any suggestions? thanks! Leonardo, There are several good online tutorials available, many listed here: http://wiki.python.org/moin/BeginnersGuide There is also the Python Tutorial written by the creator of Python here: http://docs.python.org/2/tutorial/index.html If you want a hands on approach with exercises, try Learn Python the Hard Way: http://learnpythonthehardway.org/ If you already have a background in programming I find Dive Into Python to be an excellent introduction: http://www.diveintopython.net/ as well as Think Python: How to Think Like a Computer Scientist: http://www.greenteapress.com/thinkpython/html/ If you want something you can hold in your hand and has paper pages, I can recommend Learning Python by Mark Lutz: http://shop.oreilly.com/product/9780596158071.do followed by The Python Cookbook, by Alex Martelli and David Ascher: http://shop.oreilly.com/product/9780596001674.do The Massachusetts Institute of Technology uses Python to teach their introduction to programming course which is available online (free) here: http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-00sc-introduction-to-computer-science-and-programming-spring-2011/index.htm I hope that helps. Sincerely, e. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python not starting
I did read and understood that while replying if is there we will get a blank line unnecessarily. -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
On 05/05/2013 18:35, rusi wrote: On May 5, 10:11 pm, Ignoramus16992 ignoramus16...@NOSPAM. 16992.invalid wrote: According to CIO.com, Python programmers make only $83,000 per year, while Perl programmers make $93,000 per year. http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide10http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide11 I would like to know, what explains the discrepancy. Thank you! i I expect Cobol programmers earn more than either Its called supply and demand They might get paid more, whether or not they earn it is an entirely different question. -- If you're using GoogleCrap™ please read this http://wiki.python.org/moin/GoogleGroupsPython. Mark Lawrence -- http://mail.python.org/mailman/listinfo/python-list
Re: Python not starting
On Sun, 05 May 2013 06:43:25 -0700, rama29065 wrote: I was using python from over an year and half.Suddenly from yesterday i'm unable to run it. Well, the obvious question is, what did you do yesterday to change your system? Did you install any new packages? Run a Windows update? Delete some stuff? Something changed. What was it? The error is as follows Traceback (most recent call last): File C:\Python27\lib\site.py, line 563, in module main() File C:\Python27\lib\site.py, line 546, in main known_paths = addsitepackages(known_paths) File C:\Python27\lib\site.py, line 324, in addsitepackages if os.path.isdir(sitedir): File C:\Python27\lib\genericpath.py, line 44, in isdir return stat.S_ISDIR(st.st_mode) AttributeError: 'module' object has no attribute 'S_ISDIR' This is a Python error, so Python is definitely starting. It's starting, hitting an error, and then failing with an exception. Interestingly, the error is in os.path.isdir. The os module should be importing the ntpath module. The ntpath module tries to import _isdir from the nt module, and if that fails, falls back on genericpath.isdir. Which is what fails. So you have two problems: - why is your nt module missing? - why does genericpath.isdir fail? Try running Python from the command line with the -S switch: python -S (you might need to use /S on Windows instead, I'm not sure.) Note that this is uppercase S, not lowercase. -S will disable the import of site.py module, which hopefully will then give you a prompt so you can run this: import nt print nt.__file__ which hopefully will show you have created a file called nt.py which is interfering with the actual nt file needed by Python. Get rid of that, and you should be right. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
On Sun, 05 May 2013 12:11:11 -0500, Ignoramus16992 wrote: According to CIO.com, Python programmers make only $83,000 per year, while Perl programmers make $93,000 per year. http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide10 http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide11 I would like to know, what explains the discrepancy. Perl is much harder to use, so the average Perl programmer burns out after a few years and takes up a less stressful career, like going undercover in the Russian mob or the Taliban. So only the most dedicated, brilliant and extreme programmers last long enough to become a Perl expert, and consequently can demand higher pay, while any idiot can learn to program Python, as I have. Also, Perl programmers are an unprincipled, devious bunch, always looking for an opportunity to blackmail their employers into paying them extra. Python programmers are a decent, law-abiding people with a strong moral code who would never stoop to the sort of things that Perl coders are proud of doing. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
On Sun, 05 May 2013 13:58:51 -0400, Roy Smith wrote: In article zrodnzu2u6sydxvmnz2dnuvz_v2dn...@giganews.com, Ignoramus16992 ignoramus16992@NOSPAM.16992.invalid wrote: According to CIO.com, Python programmers make only $83,000 per year, while Perl programmers make $93,000 per year. It's amazing the depths to which people are willing to sink for an extra $10k per year. Right now, I'd consider learning PHP for an extra $100 a month. Or peddling my arse down at the docks for twenty cents a time, which will be less embarrassing and much less painful. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
In comp.lang.python Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote: On Sun, 05 May 2013 12:11:11 -0500, Ignoramus16992 wrote: According to CIO.com, Python programmers make only $83,000 per year, while Perl programmers make $93,000 per year. http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide10 http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide11 I would like to know, what explains the discrepancy. Perl is much harder to use, so the average Perl programmer burns out after a few years and takes up a less stressful career, like going undercover in the Russian mob or the Taliban. So only the most dedicated, brilliant and extreme programmers last long enough to become a Perl expert, and consequently can demand higher pay, while any idiot can learn to program Python, as I have. Also, Perl programmers are an unprincipled, devious bunch, always looking for an opportunity to blackmail their employers into paying them extra. Python programmers are a decent, law-abiding people with a strong moral code who would never stoop to the sort of things that Perl coders are proud of doing. Now you got me badly worried, using both Perl and Python (and other, unspeakable languages, but not VB I promise!) Will I end up as a Python hacker for the mob or worse - or is there a chance of redemption (perhaps after a few years in Guanta- namo bay)? And should I, while it lasts, get the Perl or the Python salary, or the mean or both combined? Got to consider that when applying for my next job! Regards, Jens -- \ Jens Thoms Toerring ___ j...@toerring.de \__ http://toerring.de -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
On May 5, 2013, at 9:13 PM, Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote: On Sun, 05 May 2013 13:58:51 -0400, Roy Smith wrote: In article zrodnzu2u6sydxvmnz2dnuvz_v2dn...@giganews.com, Ignoramus16992 ignoramus16992@NOSPAM.16992.invalid wrote: According to CIO.com, Python programmers make only $83,000 per year, while Perl programmers make $93,000 per year. It's amazing the depths to which people are willing to sink for an extra $10k per year. Right now, I'd consider learning PHP for an extra $100 a month. Or peddling my arse down at the docks for twenty cents a time, which will be less embarrassing and much less painful. I, for one, I'm glad to let the Pythonistas take the high road, while other, more, err, pragmatic types, take the dough. ching ching. -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
j...@toerring.de (Jens Thoms Toerring) writes: In comp.lang.python Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote: On Sun, 05 May 2013 12:11:11 -0500, Ignoramus16992 wrote: According to CIO.com, Python programmers make only $83,000 per year, while Perl programmers make $93,000 per year. http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide10 http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide11 I would like to know, what explains the discrepancy. Perl is much harder to use, so the average Perl programmer burns out after a few years and takes up a less stressful career, like going undercover in the Russian mob or the Taliban. So only the most dedicated, brilliant and extreme programmers last long enough to become a Perl expert, and consequently can demand higher pay, while any idiot can learn to program Python, as I have. Also, Perl programmers are an unprincipled, devious bunch, always looking for an opportunity to blackmail their employers into paying them extra. Python programmers are a decent, law-abiding people with a strong moral code who would never stoop to the sort of things that Perl coders are proud of doing. Now you got me badly worried, using both Perl and Python (and other, unspeakable languages, but not VB I promise!) Will I end up as a Python hacker for the mob or worse https://en.wikipedia.org/wiki/Strange_Case_of_Dr_Jekyll_and_Mr_Hyde [SCNR] -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
In article 5186af75$0$29997$c3e8da3$54964...@news.astraweb.com, Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote: Right now, I'd consider learning PHP for an extra $100 a month. Or peddling my arse down at the docks for twenty cents a time, which will be less embarrassing and much less painful. Having spent the better part of a year doing one of those activities, I'm inclined to agree. There *are* programming languages worse than PHP. Have you ever tried britescript? -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
Ignoramus16992 ignoramus16992@NOSPAM.16992.invalid writes: I would like to know, what explains the discrepancy. I see New York listed as a location for Perl but not for Python. That implies: 1) some general skew because of the very high cost of living in NY (even compared to San Francisco or Silicon Valley); 2) further skew because a good chuck of the NY programming jobs are in the financial sector, which shovels money around with heavy farm equipment (but is reportedly otherwise unpleasant to work in). Wall Street has done very well in the past few years, and some of that shows up as bonuses for the involved parties. I remember seeing a ridiculously high figure listed for Haskell, and then realized the reason for it was similar to the above. Most Haskell programmers I know can't actually get Haskell jobs. -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
Paul Rubin no.email@nospam.invalid writes: I see New York listed as a location for Perl but not for Python. Whaat? It's there for Python, though in the #3 position rather than #2. I must have flipped through the slides too fast. -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
In comp.lang.python Rainer Weikusat rweiku...@mssgmbh.com wrote: j...@toerring.de (Jens Thoms Toerring) writes: In comp.lang.python Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote: On Sun, 05 May 2013 12:11:11 -0500, Ignoramus16992 wrote: According to CIO.com, Python programmers make only $83,000 per year, while Perl programmers make $93,000 per year. http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide10 http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide11 I would like to know, what explains the discrepancy. Perl is much harder to use, so the average Perl programmer burns out after a few years and takes up a less stressful career, like going undercover in the Russian mob or the Taliban. So only the most dedicated, brilliant and extreme programmers last long enough to become a Perl expert, and consequently can demand higher pay, while any idiot can learn to program Python, as I have. Also, Perl programmers are an unprincipled, devious bunch, always looking for an opportunity to blackmail their employers into paying them extra. Python programmers are a decent, law-abiding people with a strong moral code who would never stoop to the sort of things that Perl coders are proud of doing. Now you got me badly worried, using both Perl and Python (and other, unspeakable languages, but not VB I promise!) Will I end up as a Python hacker for the mob or worse https://en.wikipedia.org/wiki/Strange_Case_of_Dr_Jekyll_and_Mr_Hyde [SCNR] Well, that didn't have a happy ending:-( Should have listened to my parents when they told me again and again Never use Perl, just say no!. Seems I'm doomed - what's the proper way to apply for a job with the mob? -- \ Jens Thoms Toerring ___ j...@toerring.de \__ http://toerring.de -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
Steven D'Aprano於 2013年5月6日星期一UTC+8上午3時10分47秒寫道： On Sun, 05 May 2013 12:11:11 -0500, Ignoramus16992 wrote: According to CIO.com, Python programmers make only $83,000 per year, while Perl programmers make $93,000 per year. http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide10 http://www.cio.com/slideshow/detail/97819?source=ifwartcio#slide11 I would like to know, what explains the discrepancy. Perl is much harder to use, so the average Perl programmer burns out after a few years and takes up a less stressful career, like going undercover in the Russian mob or the Taliban. So only the most dedicated, brilliant and extreme programmers last long enough to become a Perl expert, and consequently can demand higher pay, while any idiot can learn to program Python, as I have. Also, Perl programmers are an unprincipled, devious bunch, always looking for an opportunity to blackmail their employers into paying them extra. Python programmers are a decent, law-abiding people with a strong moral code who would never stoop to the sort of things that Perl coders are proud of doing. -- Steven Some bosses just like the 1 to 5 liners of the Perl style in some cryptic forms from villain Perl programmers. I did see the same tricks in the Lisp or C/C++ before but with extremely long fat source codes in tens of thousands of lines that could also pleased some managers or bosses. -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
In article auo1hgfmri...@mid.uni-berlin.de, j...@toerring.de (Jens Thoms Toerring) wrote: Well, that didn't have a happy ending:-( Should have listened to my parents when they told me again and again Never use Perl, just say no!. Seems I'm doomed - what's the proper way to apply for a job with the mob? I don't think you apply. If they want you, they'll find you. -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
In comp.lang.python Roy Smith r...@panix.com wrote: In article auo1hgfmri...@mid.uni-berlin.de, j...@toerring.de (Jens Thoms Toerring) wrote: Well, that didn't have a happy ending:-( Should have listened to my parents when they told me again and again Never use Perl, just say no!. Seems I'm doomed - what's the proper way to apply for a job with the mob? I don't think you apply. If they want you, they'll find you. I see, that's what's called headhuntering, isn't it? -- \ Jens Thoms Toerring ___ j...@toerring.de \__ http://toerring.de -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
In article mailman.1310.1367789840.3114.python-l...@python.org, Dennis Lee Bieber wlfr...@ix.netcom.com wrote: On Sun, 05 May 2013 17:07:41 -0400, Roy Smith r...@panix.com declaimed the following in gmane.comp.python.general: In article 5186af75$0$29997$c3e8da3$54964...@news.astraweb.com, Steven D'Aprano steve+comp.lang.pyt...@pearwood.info wrote: Right now, I'd consider learning PHP for an extra $100 a month. Or peddling my arse down at the docks for twenty cents a time, which will be less embarrassing and much less painful. Having spent the better part of a year doing one of those activities, I'm inclined to agree. There *are* programming languages worse than PHP. Have you ever tried britescript? Is that a toothpaste, kitchen cleaner, or device for doing gold-leaf illuminated manuscripts? G It is a programming language. It is what Roku apps are written in. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python not starting
On 2013.05.05 13:55, Steven D'Aprano wrote: (you might need to use /S on Windows instead, I'm not sure.) That is only a convention among Microsoft's CLI utilities. Very few others follow it (even for programs written specifically for Windows), and it is certainly not a necessity on Windows. -- CPython 3.3.1 | Windows NT 6.2.9200 / FreeBSD 9.1 -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
On Mon, May 6, 2013 at 7:09 AM, Rainer Weikusat rweiku...@mssgmbh.com wrote: j...@toerring.de (Jens Thoms Toerring) writes: Now you got me badly worried, using both Perl and Python (and other, unspeakable languages, but not VB I promise!) Will I end up as a Python hacker for the mob or worse https://en.wikipedia.org/wiki/Strange_Case_of_Dr_Jekyll_and_Mr_Hyde Ah, that would be me. Every night, I work on open source projects written in good languages; but four days a week from 9:00 till 5:00 my other nature takes over, and there is a struggle between the forces of Good and Evil. The Evil side is strong, but even there the Good side is not completely unheard; there are occasional times when I fight off the PHP influence. (I'm still confident that we will eventually move off PHP altogether. My boss reckons it'll never happen, but I can be patient...) ChrisA -- http://mail.python.org/mailman/listinfo/python-list
Re: Python not starting
On Mon, May 6, 2013 at 4:15 AM, DRJ Reddy rama29...@gmail.com wrote: I did read and understood that while replying if is there we will get a blank line unnecessarily. If you read that page, you'll know that it does NOT advocate the total elimination of quoted text, which is what you've now done. Please don't. Your posts now lack any form of context. ChrisA -- http://mail.python.org/mailman/listinfo/python-list
Re: Why do Perl programmers make more money than Python programmers
On 2013-05-05, Paul Rubin no.email@nospam.invalid wrote: Paul Rubin no.email@nospam.invalid writes: I see New York listed as a location for Perl but not for Python. Whaat? It's there for Python, though in the #3 position rather than #2. I must have flipped through the slides too fast. My website algebra.com is written in perl, it is now #1,198 in the US rankings, based on Quantcast. I could not be happier with maintainability and robustness features of perl. i going undercover for the russian mob next week -- http://mail.python.org/mailman/listinfo/python-list
(Learner-here) Lists + Functions = headache
Hey guys and gals doing this tutorial(codecademy) and needed a bit help from the experienced. I'm writing a function that takes a list(one they supply during runtime) here's what my function is supposed to do 1. for each instance of the string fizz make a count 2. Finally return that count here's my code: def fizz_cout(x): count = 0 for item in x: while item == fizz: count += 1 return count Please remember that i am a eager beginner, where am i going wrong? -- http://mail.python.org/mailman/listinfo/python-list
Re: (Learner-here) Lists + Functions = headache
On May 6, 10:59 am, Bradley Wright bradley.wright@gmail.com wrote: def fizz_cout(x): count = 0 for item in x: while item == fizz: count += 1 return count Please remember that i am a eager beginner, where am i going wrong? There are several problems with your code: for item in x: while item == fizz: count += 1 The `for` takes an item out of the list `x`. If that item is the string 'fizz', it increments count. As it's a `while` loop, it will continue to increment for as long as `item` is 'fizz'. Since the while loop doesn't look up another list item, it will remain as 'fizz' until the end of time. Well, it would except for your second bug: while item == fizz: count += 1 return count The very first time it encounters a list item that is 'fizz', it adds one to `count`, then exits the function passing back `count`. You want to move the return to _outside_ the for loop, and you want to change your `while` condition to an `if` instead. -- http://mail.python.org/mailman/listinfo/python-list
Re: (Learner-here) Lists + Functions = headache
On Sunday, May 5, 2013 9:21:33 PM UTC-4, alex23 wrote: On May 6, 10:59 am, Bradley Wright bradley.wright@gmail.com wrote: def fizz_cout(x): count = 0 for item in x: while item == fizz: count += 1 return count Please remember that i am a eager beginner, where am i going wrong? There are several problems with your code: for item in x: while item == fizz: count += 1 The `for` takes an item out of the list `x`. If that item is the string 'fizz', it increments count. As it's a `while` loop, it will continue to increment for as long as `item` is 'fizz'. Since the while loop doesn't look up another list item, it will remain as 'fizz' until the end of time. Well, it would except for your second bug: while item == fizz: count += 1 return count The very first time it encounters a list item that is 'fizz', it adds one to `count`, then exits the function passing back `count`. You want to move the return to _outside_ the for loop, and you want to change your `while` condition to an `if` instead. Thank you Alex - much appreciated, about to implement right now! -- http://mail.python.org/mailman/listinfo/python-list
Re: (Learner-here) Lists + Functions = headache
On 5/5/2013 8:59 PM, Bradley Wright wrote: Hey guys and gals doing this tutorial(codecademy) and needed a bit help from the experienced. I'm writing a function that takes a list(one they supply during runtime) here's what my function is supposed to do Do they supply an example so you can test both your comprehension and code? I think most specs given in natural language need such. 1. for each instance of the string fizz make a count 2. Finally return that count Did you create an example problem to test your code? If not, do so. Did you run your function with example data? If not, do so. here's my code: def fizz_cout(x): count = 0 for item in x: while item == fizz: count += 1 return count Here is hint as to some of what needs to be improved: this function will return either 1 or None. You should have discovered that by testings. -- Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
Re: (Learner-here) Lists + Functions = headache
On Sun, 05 May 2013 17:59:15 -0700, Bradley Wright wrote: Hey guys and gals doing this tutorial(codecademy) and needed a bit help from the experienced. I'm writing a function that takes a list(one they supply during runtime) here's what my function is supposed to do 1. for each instance of the string fizz make a count 2. Finally return that count here's my code: def fizz_cout(x): count = 0 for item in x: while item == fizz: count += 1 return count Please remember that i am a eager beginner, where am i going wrong? Lots of places, sorry. The first thing you're doing is hoping that we will guess what error you are getting. In this case, it so happens that we can, but that will not always be the case. You should always give us the code (which you have done), the data it is running on, the expected result, and the actual result. Within reason: don't bombard us with 10,000 lines of code and 3MB of data. Now, moving on to your function: try walking through it yourself in your head. You start off by defining a value, then start iterating over each value in x, one at a time. count = 0 for item in x: Suppose x = [buzz, fizz, buzz, fizz]. Then you should get a result of 2. So far, you start with count = 0. Then you enter the for loop, and item gets the value buzz. The next line enters a while loop: while item == fizz: Since item does *not* equal fizz, the body of the while loop does not run at all, and Python jumps past the while loop, which takes it to the end of the for loop. So Python goes on to the next item. This time item gets set to fizz. So you enter the while loop again, only this time item *does* equal fizz: while item == fizz: count += 1 return count Oh-oh, trouble ahead. But luckily, you have two bugs, and they *almost* cancel themselves out. The first problem is that the while loop would be an infinite loop, going around and around and around over and over again, since you enter it with item == fizz but item always stays equal to fizz. So the first two lines would keep adding one to count, over and over again, until count is so big your computer runs out of memory (and that might take *months*). Fortunately, the very next line *almost* overcomes that bug. It doesn't *fix* it, but it does reduce the severity. After adding one to count the very first time, Python hits the line return count, which immediately exits the function, jumping out of the (infinite) while loop and the for- loop. So your function always returns either 0 (if there are no fizz in the list at all) or 1 (if there is any fizz). So, you have two problems, and they both need to be fixed: 1) The return count line must not happen until the for-loop has completed looking at each item in the list. So it must be outside the for- loop, not inside it. Remember that Python decides what is inside the loop by its indentation. 2) You don't want an infinite loop inside the for-loop. There is no need to have two loops at all. The outer for-loop is sufficient. You look at each item *once*, not over and over again, and decide *once* if you should add one to count, then go on to the next item. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: (Learner-here) Lists + Functions = headache
On Sunday, May 5, 2013 9:24:44 PM UTC-4, Bradley Wright wrote: On Sunday, May 5, 2013 9:21:33 PM UTC-4, alex23 wrote: On May 6, 10:59 am, Bradley Wright bradley.wright@gmail.com wrote: def fizz_cout(x): count = 0 for item in x: while item == fizz: count += 1 return count Please remember that i am a eager beginner, where am i going wrong? There are several problems with your code: for item in x: while item == fizz: count += 1 The `for` takes an item out of the list `x`. If that item is the string 'fizz', it increments count. As it's a `while` loop, it will continue to increment for as long as `item` is 'fizz'. Since the while loop doesn't look up another list item, it will remain as 'fizz' until the end of time. Well, it would except for your second bug: while item == fizz: count += 1 return count The very first time it encounters a list item that is 'fizz', it adds one to `count`, then exits the function passing back `count`. You want to move the return to _outside_ the for loop, and you want to change your `while` condition to an `if` instead. Thank you Alex - much appreciated, about to implement right now! Aha! lessons learned - got it! -- http://mail.python.org/mailman/listinfo/python-list
Re: (Learner-here) Lists + Functions = headache
On Mon, 06 May 2013 01:31:48 +, Steven D'Aprano wrote: So your function always returns either 0 (if there are no fizz in the list at all) or 1 (if there is any fizz). Correction: (thanks to Terry for pointing this out). It will return None or 1, not 0. How easy it is to fall into the trap of assuming the function will do what you intend it to do, instead of what you actually tell it to do :-( -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: Python not starting
import nt print nt.__file__ I have done above ones as you stated. I'm getting an error Traceback (most recent call last): File stdin, line 1, in module AttributeError: 'module' object has no attribute '__file__' -- http://mail.python.org/mailman/listinfo/python-list
Re: How to avoid PEP8 'imported but unused'
Thank you. Problem solved. /Adam On Sun, May 05, 2013 at 06:27:44PM +0100, Fábio Santos wrote: That assert will never fail. If the symbol is not imported, the import statement raises ImportError. And actually assert makes sure that the value is not false-ish, not None/Null. And AFAIK a module object is *always* true. One more question. In this particular case it seems 'assert' should be safe as a workaround, doesn't it? 'assert' will check if the symbol is imported and not NULL. Is there side effect if I just applied this rule as a generic one. -- Fábio Santos -- http://mail.python.org/mailman/listinfo/python-list
Re: Python not starting
On Monday, May 6, 2013 3:59:01 AM UTC+5:30, Chris Angelico wrote: On Mon, May 6, 2013 at 4:15 AM, DRJ Reddy rama29...@gmail.com wrote: I did read and understood that while replying if is there we will get a blank line unnecessarily. If you read that page, you'll know that it does NOT advocate the total elimination of quoted text, which is what you've now done. Please don't. Your posts now lack any form of context. ChrisA Sorry ChrisA,not only him for all, for the mess i have created.It was the first time for me on google groups. I am very happy to inform all of you that the problem is solved. The problem was due to the prescence of duplicates for genericpath.pyc and stat.pyc.I have deleted them and new ones were generated as i started python. Thanking all of you for assisting me in solving the issue. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python not starting
On Mon, May 6, 2013 at 1:15 PM, drjred...@gmail.com wrote: On Monday, May 6, 2013 3:59:01 AM UTC+5:30, Chris Angelico wrote: On Mon, May 6, 2013 at 4:15 AM, DRJ Reddy rama29...@gmail.com wrote: I did read and understood that while replying if is there we will get a blank line unnecessarily. If you read that page, you'll know that it does NOT advocate the total elimination of quoted text, which is what you've now done. Please don't. Your posts now lack any form of context. ChrisA Sorry ChrisA,not only him for all, for the mess i have created.It was the first time for me on google groups. I am very happy to inform all of you that the problem is solved. The problem was due to the prescence of duplicates for genericpath.pyc and stat.pyc.I have deleted them and new ones were generated as i started python. Thanking all of you for assisting me in solving the issue. Excellent! Glad it's sorted. The .pyc problem is, if I understand correctly, more permanently solved in newer versions of Python. So this won't ever be an issue again :) ChrisA -- http://mail.python.org/mailman/listinfo/python-list
Re: (Learner-here) Lists + Functions = headache
Bradley Wright於 2013年5月6日星期一UTC+8上午8時59分15秒寫道： Hey guys and gals doing this tutorial(codecademy) and needed a bit help from the experienced. I'm writing a function that takes a list(one they supply during runtime) here's what my function is supposed to do 1. for each instance of the string fizz make a count 2. Finally return that count here's my code: def fizz_cout(x): count = 0 for item in x: while item == fizz: count += 1 return count This is not indented right in the scope to return the total count. -- http://mail.python.org/mailman/listinfo/python-list
[issue17408] second python execution fails when embedding
Antoine Pitrou added the comment: Should be fixed in 7de9852cdc0e, sorry. -- resolution: - fixed stage: - committed/rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17408 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17809] FAIL: test_expanduser when $HOME ends with /
Changes by Antoine Pitrou pit...@free.fr: -- assignee: - ezio.melotti stage: - patch review ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17809 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17894] Edits to descriptor howto
Antoine Pitrou added the comment: in contrast to an authoritative document closely tied to the actually implementation details I fail to understand why a HOWTO should be an authoritative document closely tied to implementation details. If you don't want this document to be beginner-friendly, please move it into the language reference, not the HOWTO directory. -- nosy: +pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17894 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17809] FAIL: test_expanduser when $HOME ends with /
koobs added the comment: Thanks Antoine, I'm removing the 'Library' component on this one given the proposed resolution. Additionally, given the trivial nature and isolation of the change strictly to the test, I'd like to request this go into 3.2 as well. For any future security fixes to 3.2 until its EoL, having our buildbots 'green' is imperative and a prerequisite for identifying regressions -- components: -Library (Lib) ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17809 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11406] There is no os.listdir() equivalent returning generator instead of list
Charles-François Natali added the comment: I'd slightly prefer the name iterdir_stat(), as that almost makes the (name, stat) return values explicit in the name. But that's kind of bikeshedding -- scandir() works too. I find iterdir_stat() ugly :-) I like the scandir name, which has some precedent with POSIX. That's right: if we have a separate scandir() that returns (name, stat) tuples, then a plain iterdir() is pretty much unnecessary -- callers just ignore the second stat value if they don't care about it. Hum, wait. scandir() cannot return (name, stat), because on POSIX, readdir() only returns d_name and d_type (the type of the entry): to return a stat, we would have to call stat() on each entry, which would defeat the performance gain. And that's the problem with scandir: it's not portable. Depending on the OS/file system, you could very well get DT_UNKNOWN (and on Linux, since it uses an adaptive heuristic for NFS filesystem, you could have some entries with a resolved d_type and some others with DT_UNKNOWN, on the same directory stream). That's why scandir would be a rather low-level call, whose main user would be walkdir, which only needs to know the entry time and not the whole stat result. Also, I don't know which information is returned by the readdir equivalent on Windows, but if we want a consistent API, we have to somehow map d_type and Windows's returned type to a common type, like DT_FILE, DT_DIRECTORY, etc (which could be an enum). The other approach would be to return a dummy stat object with only st_mode set, but that would be kind of a hack to return a dummy stat result with only part of the attributes set (some people will get bitten by this). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11406 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11406] There is no os.listdir() equivalent returning generator instead of list
Ben Hoyt added the comment: I find iterdir_stat() ugly :-) I like the scandir name, which has some precedent with POSIX. Fair enough. I'm cool with scandir(). scandir() cannot return (name, stat), because on POSIX, readdir() only returns d_name and d_type (the type of the entry): to return a stat, we would have to call stat() on each entry, which would defeat the performance gain. Yes, you're right. I solved this in BetterWalk with the solution you propose of returning a stat_result object with the fields it could get for free set, and the others set to None. So on Linux, you'd get a stat_result with only st_mode set (or None for DT_UNKNOWN), and all the other fields None. However -- st_mode is the one you're most likely to use, usually looking just for whether it's a file or directory. So calling code would look something like this: files = [] dirs = [] for name, st in scandir(path): if st.st_mode is None: st = os.stat(os.path.join(path, name)) if stat.S_ISDIR(st.st_mode): dirs.append(name) else: files.append(name) Meaning you'd get the speed improvements 99% of the time (when st_mode) was set, but if st_mode is None, you can call stat and handle errors and whatnot yourself. That's why scandir would be a rather low-level call, whose main user would be walkdir, which only needs to know the entry time and not the whole stat result. Agreed. This is in the OS module after all, and there's tons of stuff that's OS-dependent in there. However, I think that doing something like the above, we can make it usable and performant on both Linux and Windows for use cases like walking directory trees. Also, I don't know which information is returned by the readdir equivalent on Windows, but if we want a consistent API, we have to somehow map d_type and Windows's returned type to a common type, like DT_FILE, DT_DIRECTORY, etc (which could be an enum). The Windows scan directory functions (FindFirstFile/FindNextFile) return a *full* stat (or at least, as much info as you get from a stat in Windows). We *could* map them to a common type -- but I'm suggesting that common type might as well be stat_result with None meaning not present. That way users don't have to learn a completely new type. The other approach would be to return a dummy stat object with only st_mode set, but that would be kind of a hack to return a dummy stat result with only part of the attributes set (some people will get bitten by this). We could document any platform-specific stuff, and places you'd users could get bitten. But can you give me an example of where the stat_result-with-st_mode-or-None approach falls over completely? -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11406 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11406] There is no os.listdir() equivalent returning generator instead of list
Nick Coghlan added the comment: I think os.scandir is a case where we *want* a low level call that exposes everything we can retrieve efficiently about the directory entries given the underlying platform - not everything written in Python is written to be portable, especially when it comes to scripts rather than applications (e.g. given where I work, I write a fair bit of code that is Fedora/RHEL specific, and if that code happens to work anywhere else it's just a bonus rather than being of any specific value to me). This may mean that we just return an info object for each item, where the available info is explicitly platform specific. Agreed it can be an actual stat object, though. os.walk then become the cross-platform abstraction built on top of the low level scandir call (splitting files from directories is probably about all we can do consistently cross-platform without per-entry stat calls). -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11406 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1545463] New-style classes fail to cleanup attributes
Changes by Armin Rigo ar...@users.sourceforge.net: -- nosy: -arigo ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1545463 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11406] There is no os.listdir() equivalent returning generator instead of list
Charles-François Natali added the comment: We could document any platform-specific stuff, and places you'd users could get bitten. But can you give me an example of where the stat_result-with-st_mode-or-None approach falls over completely? Well, that's easy: size = 0 for name, st in scandir(path): if stat.S_ISREG(st.st_mode): size += st.st_size Agreed it can be an actual stat object, though. Well, the nice thing is that we don't have to create yet another info object, the downside is that it can be tricky, see above. We can probably use the DTTOIF macro to convert d_type to st_mode. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11406 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17908] Unittest runner needs an option to call gc.collect() after each test
Changes by Giampaolo Rodola' g.rod...@gmail.com: -- nosy: +giampaolo.rodola ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17908 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue1545463] New-style classes fail to cleanup attributes
Antoine Pitrou added the comment: Here is an updated patch after the latest changes on default. -- Added file: http://bugs.python.org/file30129/gcshutdown2.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue1545463 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17908] Unittest runner needs an option to call gc.collect() after each test
Antoine Pitrou added the comment: OTOH it's a useful option to have in case you're tracking down something that happens (or doesn't happen) when an object is collected IMO this is a good reason to implement your specific tearDown method (or call addCleanup if you prefer), possibly in a shared base class. I don't think this is a good candidate for a command-line option, it's too specialized and it's also not something which should be enabled blindly. In other words, each test case should know whether it needs a collection or not. -- nosy: +pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17908 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17906] JSON should accept lone surrogates
Serhiy Storchaka added the comment: After investigating the problem deeper, I see that new parameter is not needed. RFC 4627 does not make exceptions for the range 0xD800-0xDFFF, and the decoder must accept lone surrogates, both escaped and unescaped. Non-BMP characters may be represented as escaped surrogate pair, so escaped surrogate pair may be decoded as non-BMP character, while unescaped surrogate pair shouldn't. Here is a patch, with which JSON decoder accepts encoded lone surrogates. Also fixed a bug when Python implementation decodes \\ud834\\u0079x as \U0001d179. -- keywords: +patch stage: needs patch - patch review title: Add a string error handler to JSON encoder/decoder - JSON should accept lone surrogates type: enhancement - behavior versions: +Python 2.7, Python 3.3 Added file: http://bugs.python.org/file30130/json_decode_lone_surrogates.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17906 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17906] JSON should accept lone surrogates
Changes by Serhiy Storchaka storch...@gmail.com: Added file: http://bugs.python.org/file30131/json_decode_lone_surrogates-2.7.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17906 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue995907] memory leak with threads and enhancement of the timer class
Yael added the comment: Can you please review the patch? thanks! -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue995907 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17907] Deprecate imp.new_module() in favour of types.ModuleType
Antoine Pitrou added the comment: If so, then at least the constructor should be documented. -- nosy: +pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17907 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15902] imp.load_module won't accept None for the file argument for a C extension
Brett Cannon added the comment: http://hg.python.org/cpython/rev/996a937cdf81 also applies to this. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15902 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17636] Modify IMPORT_FROM to fallback on sys.modules
Brett Cannon added the comment: Don't be distracted when trying to write tests is the lesson learned. Fixed basic and rebinding and just deleted indirect. -- Added file: http://bugs.python.org/file30132/import_from_tests.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17636 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17909] Autodetecting JSON encoding
New submission from Serhiy Storchaka: RFC 4627 specifies a method to determine an encoding (one of UTF-8, UTF-16(BE|LE) or UTF-32(BE|LE)) of encoded JSON text. The proposed preliminary patch (it doesn't include the documentation yet) allows load() and loads() functions accept bytes data when it is encoded with standard Unicode encoding. Also accepted data with BOM (this doesn't specified in RFC 4627, but is widely used). There is only one case where the method can give a misfire. Serialized string \x00... encoded in UTF-16LE may be erroneously detected as encoded in UTF-32LE. This case violates the two rules of RFC 4627: the string was serialized instead of a an object or an array, and the control character U+ was not escaped. The standard encoded JSON always detected correctly. This patch requires surrogatepass error handler for utf-16/32 (see issue12892 and issue13916). -- assignee: serhiy.storchaka components: Library (Lib), Unicode files: json_detect_encoding.patch keywords: patch messages: 188442 nosy: ezio.melotti, pitrou, rhettinger, serhiy.storchaka priority: normal severity: normal status: open title: Autodetecting JSON encoding type: enhancement versions: Python 3.4 Added file: http://bugs.python.org/file30133/json_detect_encoding.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17909 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17909] Autodetecting JSON encoding
Changes by Serhiy Storchaka storch...@gmail.com: -- dependencies: +UTF-16 and UTF-32 codecs should reject (lone) surrogates, disallow the surrogatepass handler for non utf-* encodings ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17909 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue11406] There is no os.listdir() equivalent returning generator instead of list
STINNER Victor added the comment: I really like scandir() - (name: str, stat: stat structure using None for unknown fields). I expect that this API to optimize use cases like: - glob.glob(*.jpg) in a big directory with few JPEG picture - os.walk(.) in a directory with many files: should reduce the number of stat() to zero on most platforms But as usual, a benchmark on a real platform would be more convicing. Filtering entries in os.listdir() or os.scandir() would be faster (than filtering their output), but it hard to design an API to filter arbitrary fields (name, file type, size, ...) especially because the underlying C functions does not provide required information. A generator is closer to Python design and more natural. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue11406 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue12634] Random Remarks in class documentation
Yogesh Chaudhari added the comment: Similar changes for 2.7 branch -- hgrepos: +188 Added file: http://bugs.python.org/file30135/issue12634-27.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue12634 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue12634] Random Remarks in class documentation
Yogesh Chaudhari added the comment: Based on Teery's comments, this patch makes the changes to the random remarks section of the class documentation -- keywords: +patch nosy: +Yogesh.Chaudhari Added file: http://bugs.python.org/file30134/issue12634.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue12634 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17732] distutils.cfg Can Break venv
Nick Sloan added the comment: Just checking to see if anything else is needed from me on this. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17732 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17798] IDLE: can not edit new file names when using -e
Roundup Robot added the comment: New changeset c8cdc2400643 by Roger Serwy in branch '3.3': #17798: Allow IDLE to edit new files when specified on command line. http://hg.python.org/cpython/rev/c8cdc2400643 New changeset a64a3da996ed by Roger Serwy in branch 'default': #17798: merge with 3.3. http://hg.python.org/cpython/rev/a64a3da996ed -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17798 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17798] IDLE: can not edit new file names when using -e
Roger Serwy added the comment: I'm closing this issue as fixed. -- resolution: - fixed stage: patch review - committed/rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17798 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17903] Python launcher for windows should search path for #!/usr/bin/env
Paul Moore added the comment: There is a patch for this (against the standalone pylauncher project) at https://bitbucket.org/pmoore/pylauncher. -- keywords: +patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17903 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17858] Different documentation for identical methods
Andriy Mysyk added the comment: Made changes suggested by Ezio Melotti in the attached patch. -- Added file: http://bugs.python.org/file30136/issue17858.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17858 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17908] Unittest runner needs an option to call gc.collect() after each test
Guido van Rossum added the comment: On Sun, May 5, 2013 at 4:29 AM, Antoine Pitrou rep...@bugs.python.org wrote: Antoine Pitrou added the comment: OTOH it's a useful option to have in case you're tracking down something that happens (or doesn't happen) when an object is collected IMO this is a good reason to implement your specific tearDown method (or call addCleanup if you prefer), possibly in a shared base class. I don't think this is a good candidate for a command-line option, it's too specialized and it's also not something which should be enabled blindly. In other words, each test case should know whether it needs a collection or not. This is not for tests that know or expect they need a call to gc.collect(). This is for the case where you have 500 tests that weren't written with gc.collect() in mind, and suddenly you have a nondeterministic failure because something goes wrong during collection. The cause is probably many tests earlier -- and if you could just call gc.collect() in each tearDown() it would be a cinch to pinpoint the test that causes this. But (unless you had all that foresight) that's a massive undertaking. However turning on the command line option makes it trivial. It's rare that extra collections cause tests to fail (and if it does that's a flakey test anyway) so just turning this on for all tests shouldn't affect correct tests -- however it can slow down your test suite 3x or more so you don't want this to be unittest's default behavior. Hence the suggestion of a command line flag. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17908 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17094] sys._current_frames() reports too many/wrong stack frames
Antoine Pitrou added the comment: Here is an updated patch which doesn't hold the lock while calling PyThreadState_Clear(). It looks like it should be ok. Also, I've added some comments. -- Added file: http://bugs.python.org/file30137/tstates-afterfork2.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17094 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue16518] add buffer protocol to glossary
Ezio Melotti added the comment: Updated patch to include getargs.c too. -- stage: patch review - commit review Added file: http://bugs.python.org/file30138/issue16518-4.diff ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue16518 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue9682] socket.create_connection error message for domain subpart with invalid length is very confusing
Mike Milkin added the comment: Moved the conditional logic out of the method. There are no tests for ToASCII function and I was not comfortable making changes to it without adding tests. -- Added file: http://bugs.python.org/file30139/Issue9682-5513.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue9682 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue15528] Better support for finalization with weakrefs
Richard Oudkerk added the comment: Here is an updated patch. It is only really the example in the docs which is different, plus a note about daemon threads. Antoine, do think this is ready to be committed? -- Added file: http://bugs.python.org/file30140/finalize.patch ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue15528 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue17883] Fix buildbot testing of Tkinter
Roundup Robot added the comment: New changeset 3c58fa7dc7f1 by Ezio Melotti in branch '2.7': #17883: Fix buildbot testing of Tkinter on Windows. Patch by Zachary Ware. http://hg.python.org/cpython/rev/3c58fa7dc7f1 -- nosy: +python-dev ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue17883 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
