Jonathan Lange <jml@[...].net>  writes:

>  Hello,
> 
>  A module can attempt to delete itself from sys.modules (see selfabuser.py).
> 
>  This works perfectly well running in the normal python interpreter on
>  many platforms. As evidence, Twisted does this in its reactor module.

Hm.

>  One can build a console exe using py2exe 0.5, where this works perfectly.
> 
>  However, when you build the same script to a windows exe, it fails.
>  Moreover, it fails hard. A try/except block around the offending
>  statement catches nothing.
> 
>  I'd greatly appreciate a work-around. However, I'd appreciate an
>  explanation of why this is failing even more.
> 
>  cheers,
>  jml
>  from distutils.core import setup
>  import py2exe
> 
>  setup(windows=['crash-py2exe.py'])
> 
This is crash-py2exe.py, I assume?
>  f = file('debug.txt', 'w')
>  f.write('Is this the real life?\n')
>  f.close()
> 
>  import selfabuser

And this is selfabuser.py?

>  f = file('debug.txt', 'a')
>  f.write('Is this just fantasy?\n')
>  f.close()
> 
>  import sys
>  del sys.modules['selfabuser']

When I run this in normal Python, I get:

Python 2.3.4 (#53, May 25 2004, 21:17:02) [MSC v.1200 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
> >> import selfabuser
Traceback (most recent call last):
  File "<stdin> ", line 1, in ?
ImportError: Loaded module selfabuser not found in sys.modules
> >>

So, it seems a module cannot remove itself from sys.modules - at least
not before the import is completed.

For py2exe, in 0.5.0 there's a bug in windows executables: to make them
work you should add a 'import sys' at the top of your main script.
Or use the CVS version until 0.5.1 is released, the bug is fixed there.

Thomas



-------------------------------------------------------
This SF.Net email sponsored by Black Hat Briefings & Training.
Attend Black Hat Briefings & Training, Las Vegas July 24-29 - 
digital self defense, top technical experts, no vendor pitches, 
unmatched networking opportunities. Visit www.blackhat.com
_______________________________________________
Py2exe-users mailing list
Py2exe-users@[...].net
https://lists.sourceforge.net/lists/listinfo/py2exe-users