FAQ
Hi all,

I just installed python 3.1.2 where I used to have python 2.6.4. I'm
working on Win7.

The IDLE GUI works, but I get the following message when trying to
open *.py files written for py 2.6

The Application cannot locate win32ui.pyd (or Python) (126)

Should I change the PATH in Windows? Should I change the PYTHONPATH? I
am a bit lost. Everything worked fine with 2.6.

Moreover, when I try to open an old *.py file, I sometimes get a
message saying that the file should be converted to UTF-8. What does
this mean?

I'm also trying to use the 2to3 converter, but I cannot see where the
converted files are written to!

Any help is highly appreciated.

Vicente Soler

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  • Alex Willmer at Aug 4, 2010 at 3:41 pm

    On Aug 4, 2:35?pm, vsoler wrote:
    Hi all,

    I just installed python 3.1.2 where I used to have python 2.6.4. I'm
    working on Win7.

    The IDLE GUI works, but I get the following message when trying to
    open *.py files written for py 2.6

    ? ? ? ? The Application cannot locate win32ui.pyd (or Python) (126)
    win32ui is part of the PyWin32 package. Most likely you have a version
    of PyWin32 for Python 2.6 installed, you should uninstall that and
    install PyWin32 for Python 3.1. Downloads are at
    http://sourceforge.net/projects/pywin32/files/

    You should do the same for any other third party packages that are
    installed.
    Moreover, when I try to open an old *.py file, I sometimes get a
    message saying that the file should be converted to UTF-8. What does
    this mean?
    Those files contain non-ascii characters (e.g. ?, ?, ?). Non-ascii
    characters must be encoded when saved using and encoding. UTF-8 is one
    such encoding, and it was chosen as the default .py encoding for
    Python 3.x. Those files are probably in iso8859, cp432, or perhaps
    UTF-16 (aka UCS-2). You can save them in UTF-8 using your favourite
    text editor, or declare the encoding so Python 3 knows it. More info:

    http://www.joelonsoftware.com/articles/Unicode.html
    http://docs.python.org/howto/unicode
    I'm also trying to use the 2to3 converter, but I cannot see where the
    converted files are written to!
    I think 2to3 prints a diff of the file changes to the console. The -w
    command line option should modify files in place.
  • Vsoler at Aug 4, 2010 at 4:19 pm

    On Aug 4, 5:41?pm, Alex Willmer wrote:
    On Aug 4, 2:35?pm, vsoler wrote:

    Hi all,
    I just installed python 3.1.2 where I used to have python 2.6.4. I'm
    working on Win7.
    The IDLE GUI works, but I get the following message when trying to
    open *.py files written for py 2.6
    ? ? ? ? The Application cannot locate win32ui.pyd (or Python) (126)
    win32ui is part of the PyWin32 package. Most likely you have a version
    of PyWin32 for Python 2.6 installed, you should uninstall that and
    install PyWin32 for Python 3.1. Downloads are athttp://sourceforge.net/projects/pywin32/files/

    You should do the same for any other third party packages that are
    installed.
    Moreover, when I try to open an old *.py file, I sometimes get a
    message saying that the file should be converted to UTF-8. What does
    this mean?
    Those files contain non-ascii characters (e.g. ?, ?, ?). Non-ascii
    characters must be encoded when saved using and encoding. UTF-8 is one
    such encoding, and it was chosen as the default .py encoding for
    Python 3.x. Those files are probably in iso8859, cp432, or perhaps
    UTF-16 (aka UCS-2). You can save them in UTF-8 using your favourite
    text editor, or declare the encoding so Python 3 knows it. More info:

    http://www.joelonsoftware.com/articles/Unicode.htmlhttp://docs.python.org/howto/unicode
    I'm also trying to use the 2to3 converter, but I cannot see where the
    converted files are written to!
    I think 2to3 prints a diff of the file changes to the console. The -w
    command line option should modify files in place.
    Thank you Alex for your detailes reply.

    Before switching to Python 3.1.2 I removed all my Python 2.6 packages
    (python, pywin32, numpy, wxpython). However, the removal was not
    complete since some files could not be removed. Additionally, I still
    see my C:\python26 directory which is suposed not to exist any longer.

    If I go to the Control Panel, I cannot see any of the above suposedly
    removed programs as pending of removal, so I really do not know what
    more to do. I was even thinking of removing the C:\python26 directory
    with the Supr key, but I always heard that it is not a good idea, the
    Registry could become inconsistent. Additionally, I have not found in
    my Win7 system nay utility for fixing it, should it become corrupt.

    Perhaps my questions concern a bit more the Operating system (windows)
    than they do python, but since I am fond of python and I definitely
    would like to become somehow proficient at it, I would like to solve
    the problem that I have.

    I would not like to take a lot of your time, but, do you have any
    hints as to what I should do to 'tune' my PC?

    Thank you very much for your help.

    Vicente Soler
  • Alex Willmer at Aug 4, 2010 at 5:52 pm

    On Aug 4, 5:19?pm, vsoler wrote:
    On Aug 4, 5:41?pm, Alex Willmer wrote:




    On Aug 4, 2:35?pm, vsoler wrote:

    Hi all,
    I just installed python 3.1.2 where I used to have python 2.6.4. I'm
    working on Win7.
    The IDLE GUI works, but I get the following message when trying to
    open *.py files written for py 2.6
    ? ? ? ? The Application cannot locate win32ui.pyd (or Python) (126)
    win32ui is part of the PyWin32 package. Most likely you have a version
    of PyWin32 for Python 2.6 installed, you should uninstall that and
    install PyWin32 for Python 3.1. Downloads are athttp://sourceforge.net/projects/pywin32/files/
    You should do the same for any other third party packages that are
    installed.
    Moreover, when I try to open an old *.py file, I sometimes get a
    message saying that the file should be converted to UTF-8. What does
    this mean?
    Those files contain non-ascii characters (e.g. ?, ?, ?). Non-ascii
    characters must be encoded when saved using and encoding. UTF-8 is one
    such encoding, and it was chosen as the default .py encoding for
    Python 3.x. Those files are probably in iso8859, cp432, or perhaps
    UTF-16 (aka UCS-2). You can save them in UTF-8 using your favourite
    text editor, or declare the encoding so Python 3 knows it. More info:
    http://www.joelonsoftware.com/articles/Unicode.htmlhttp://docs.python...
    I'm also trying to use the 2to3 converter, but I cannot see where the
    converted files are written to!
    I think 2to3 prints a diff of the file changes to the console. The -w
    command line option should modify files in place.
    Thank you Alex for your detailes reply.

    Before switching to Python 3.1.2 I removed all my Python 2.6 packages
    (python, pywin32, numpy, wxpython). However, the removal was not
    complete since some files could not be removed. Additionally, I still
    see my C:\python26 directory which is suposed not to exist any longer.
    It probably contains one or two files the installers weren't aware of.
    E.g. a module you added manually, a log, a .pyc
    I would not like to take a lot of your time, but, do you have any
    hints as to what I should do to 'tune' my PC?
    Take a backup then either delete the Python26 directory, or rename it.
    Any problems, reverse the process.
  • Vsoler at Aug 4, 2010 at 6:50 pm

    On Aug 4, 7:52?pm, Alex Willmer wrote:
    On Aug 4, 5:19?pm, vsoler wrote:


    On Aug 4, 5:41?pm, Alex Willmer wrote:
    On Aug 4, 2:35?pm, vsoler wrote:

    Hi all,
    I just installed python 3.1.2 where I used to have python 2.6.4. I'm
    working on Win7.
    The IDLE GUI works, but I get the following message when trying to
    open *.py files written for py 2.6
    ? ? ? ? The Application cannot locate win32ui.pyd (or Python) (126)
    win32ui is part of the PyWin32 package. Most likely you have a version
    of PyWin32 for Python 2.6 installed, you should uninstall that and
    install PyWin32 for Python 3.1. Downloads are athttp://sourceforge.net/projects/pywin32/files/
    You should do the same for any other third party packages that are
    installed.
    Moreover, when I try to open an old *.py file, I sometimes get a
    message saying that the file should be converted to UTF-8. What does
    this mean?
    Those files contain non-ascii characters (e.g. ?, ?, ?). Non-ascii
    characters must be encoded when saved using and encoding. UTF-8 is one
    such encoding, and it was chosen as the default .py encoding for
    Python 3.x. Those files are probably in iso8859, cp432, or perhaps
    UTF-16 (aka UCS-2). You can save them in UTF-8 using your favourite
    text editor, or declare the encoding so Python 3 knows it. More info:
    http://www.joelonsoftware.com/articles/Unicode.htmlhttp://docs.python...
    I'm also trying to use the 2to3 converter, but I cannot see where the
    converted files are written to!
    I think 2to3 prints a diff of the file changes to the console. The -w
    command line option should modify files in place.
    Thank you Alex for your detailes reply.
    Before switching to Python 3.1.2 I removed all my Python 2.6 packages
    (python, pywin32, numpy, wxpython). However, the removal was not
    complete since some files could not be removed. Additionally, I still
    see my C:\python26 directory which is suposed not to exist any longer.
    It probably contains one or two files the installers weren't aware of.
    E.g. a module you added manually, a log, a .pyc
    I would not like to take a lot of your time, but, do you have any
    hints as to what I should do to 'tune' my PC?
    Take a backup then either delete the Python26 directory, or rename it.
    Any problems, reverse the process.
    Thank you very much Alex

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postedAug 4, '10 at 1:35p
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