Bad magic number?

Volucris volucris at hotmail.com
Mon May 7 07:40:02 CEST 2001


OK, thanks.
"Tim Peters" <tim.one at home.com> wrote in message
news:mailman.989211188.25016.python-list at python.org...
> [Volucris]
> > The following error happens when importing mp3scan.py:
> > ...
> > Python 2.0 (#8, Oct 16 2000, 17:27:58) [MSC 32 bit (Intel)] on win32
> > >>> import mp3scan
> > ...
> > ImportError: Bad magic number in
> > C:\Python20\mp3scan.pyc
> > >>>
>
> Note that it's complaining about a .pyc file, not a .py file.  Delete the
> .pyc file and try again.
>
> > ...
> > I e-mailed him the pyc. Anyone know what a 'magic number' is?
>
> In this case it's catching that the user is trying to run a .pyc file
under a
> version of Python it can't be run under.  As you said later:
>
> > Also, the pyc was created with Python 2.1
>
> Programs compiled by 2.1 may use features that an eariler interpreter
(like
> the 2.0 at the start of your first msg) has no idea what to do with.  So
each
> version of Python puts a unique "magic number" in the .pyc files it
> generates, and when Python runs a .pyc file it first checks to see that
the
> magic number within it matches what it expects.
>
> Send your friend a .py file instead.
>
>





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