Re: [Py2exe-users] ImportError: cannot import name factorial

[Thomas H. <th...@ct...>]

Cédrick FAURY schrieb:
> "packages" option doesn't work , neither "includes" or lots or others 
> options ...
> 
> I wrote the "program" with the single line :
> 
>    from scipy import factorial
> 
> and make a package with :
> 
>    from distutils.core import setup
>    import py2exe
>    setup( windows=[{"script" :"testscipy2exe.py",}])
> 
> and when I fire up testscipy2exe.exe, the result is :
> Traceback (most recent call last):
>   File "testscipy2exe.py", line 4, in <module>
> ImportError: cannot import name factorial
> 
> Of course, I tried to buid it with a lot of options like "packages", 
> "includes", excludes", "compressed", "optimize", ...
> and it's alway the same.

I can reproduce the error that you get.  Looking into it, I find the following:

The factorial function is actually implemented in the scipy.misc.common module;
factorial.__module__ is 'scipy.misc.common'.

Doing 'from scipy.misc.common import factorial' works fine (also in the exe!),
so the scipy.misc.common module is found by py2exe and included in library.zip.

Looking into Lib\site-packages\scipy\__init__.py I see that some fancy PackageLoader
is probably doing some magic to import a lot of stuff into the 'scipy' namespace.
I fear the problem is that the PackageLoader doen't work correctly when the scipy
package is in a zip file.  I have no time to examine this further; but it looks like
there is some code inside scipy\__init__.py that allows to debug the imports.

You might also ask on the scipy or numpy list for advice.

-- 
Thanks,
Thomas