import dll instead of pyd

jrh

Hello,

From previous posts and documentation it seems python should be able
to import a module that is compiled into a .dll just as well as
a .pyd. I have a pyd that works fine, but after renaming it to dll the
import fails. Running python with -vv flag indicates it doesn't
actually look for the dll (see below). Has dll import been defeatured
in python?

Thanks!

>>import _mydllpythonmod ule

# trying _mydllpythonmod ule.pyd
# trying _mydllpythonmod ule.py
# trying _mydllpythonmod ule.pyw
# trying _mydllpythonmod ule.pyc
# trying C:\Python25\DLL s\_mydllpythonm odule.pyd
# trying C:\Python25\DLL s\_mydllpythonm odule.py
# trying C:\Python25\DLL s\_mydllpythonm odule.pyw
# trying C:\Python25\DLL s\_mydllpythonm odule.pyc
# trying C:\Python25\lib \_mydllpythonmo dule.pyd
# trying C:\Python25\lib \_mydllpythonmo dule.py
# trying C:\Python25\lib \_mydllpythonmo dule.pyw
# trying C:\Python25\lib \_mydllpythonmo dule.pyc
# trying C:\Python25\lib \lib-tk\_mydllpython module.pyd
# trying C:\Python25\lib \lib-tk\_mydllpython module.py
# trying C:\Python25\lib \lib-tk\_mydllpython module.pyw
# trying C:\Python25\lib \lib-tk\_mydllpython module.pyc
# trying C:\Python25\_my dllpythonmodule .pyd
# trying C:\Python25\_my dllpythonmodule .py
# trying C:\Python25\_my dllpythonmodule .pyw
# trying C:\Python25\_my dllpythonmodule .pyc
# trying C:\Python25\lib \site-packages\_mydll pythonmodule.py d
# trying C:\Python25\lib \site-packages\_mydll pythonmodule.py
# trying C:\Python25\lib \site-packages\_mydll pythonmodule.py w
# trying C:\Python25\lib \site-packages\_mydll pythonmodule.py c
# trying C:\Python25\lib \site-packages\win32\ _mydllpythonmod ule.pyd
# trying C:\Python25\lib \site-packages\win32\ _mydllpythonmod ule.py
# trying C:\Python25\lib \site-packages\win32\ _mydllpythonmod ule.pyw
# trying C:\Python25\lib \site-packages\win32\ _mydllpythonmod ule.pyc
# trying C:\Python25\lib \site-packages\win32\ lib
\_mydllpythonmo dule.pyd
# trying C:\Python25\lib \site-packages\win32\ lib\_mydllpytho nmodule.py
# trying C:\Python25\lib \site-packages\win32\ lib
\_mydllpythonmo dule.pyw
# trying C:\Python25\lib \site-packages\win32\ lib
\_mydllpythonmo dule.pyc
# trying C:\Python25\lib \site-packages\Python win
\_mydllpythonmo dule.pyd
# trying C:\Python25\lib \site-packages\Python win\_mydllpytho nmodule.py
# trying C:\Python25\lib \site-packages\Python win
\_mydllpythonmo dule.pyw
# trying C:\Python25\lib \site-packages\Python win
\_mydllpythonmo dule.pyc
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named _mydllpythonmod ule

>>>

Jul 25 '08 #1

Subscribe Reply

7259

Nick Dumas

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Is this DLL in the same directory as your script? If not, is it part of
your pythonpath? If neither are true, then you won't be able to import
it, regardless of whether it's a good file or not.

jrh wrote:

Hello,

From previous posts and documentation it seems python should be able
to import a module that is compiled into a .dll just as well as
a .pyd. I have a pyd that works fine, but after renaming it to dll the
import fails. Running python with -vv flag indicates it doesn't
actually look for the dll (see below). Has dll import been defeatured
in python?

Thanks!

>>>import _mydllpythonmod ule

# trying _mydllpythonmod ule.pyd
# trying _mydllpythonmod ule.py
# trying _mydllpythonmod ule.pyw
# trying _mydllpythonmod ule.pyc
# trying C:\Python25\DLL s\_mydllpythonm odule.pyd
# trying C:\Python25\DLL s\_mydllpythonm odule.py
# trying C:\Python25\DLL s\_mydllpythonm odule.pyw
# trying C:\Python25\DLL s\_mydllpythonm odule.pyc
# trying C:\Python25\lib \_mydllpythonmo dule.pyd
# trying C:\Python25\lib \_mydllpythonmo dule.py
# trying C:\Python25\lib \_mydllpythonmo dule.pyw
# trying C:\Python25\lib \_mydllpythonmo dule.pyc
# trying C:\Python25\lib \lib-tk\_mydllpython module.pyd
# trying C:\Python25\lib \lib-tk\_mydllpython module.py
# trying C:\Python25\lib \lib-tk\_mydllpython module.pyw
# trying C:\Python25\lib \lib-tk\_mydllpython module.pyc
# trying C:\Python25\_my dllpythonmodule .pyd
# trying C:\Python25\_my dllpythonmodule .py
# trying C:\Python25\_my dllpythonmodule .pyw
# trying C:\Python25\_my dllpythonmodule .pyc
# trying C:\Python25\lib \site-packages\_mydll pythonmodule.py d
# trying C:\Python25\lib \site-packages\_mydll pythonmodule.py
# trying C:\Python25\lib \site-packages\_mydll pythonmodule.py w
# trying C:\Python25\lib \site-packages\_mydll pythonmodule.py c
# trying C:\Python25\lib \site-packages\win32\ _mydllpythonmod ule.pyd
# trying C:\Python25\lib \site-packages\win32\ _mydllpythonmod ule.py
# trying C:\Python25\lib \site-packages\win32\ _mydllpythonmod ule.pyw
# trying C:\Python25\lib \site-packages\win32\ _mydllpythonmod ule.pyc
# trying C:\Python25\lib \site-packages\win32\ lib
\_mydllpythonmo dule.pyd
# trying C:\Python25\lib \site-packages\win32\ lib\_mydllpytho nmodule.py
# trying C:\Python25\lib \site-packages\win32\ lib
\_mydllpythonmo dule.pyw
# trying C:\Python25\lib \site-packages\win32\ lib
\_mydllpythonmo dule.pyc
# trying C:\Python25\lib \site-packages\Python win
\_mydllpythonmo dule.pyd
# trying C:\Python25\lib \site-packages\Python win\_mydllpytho nmodule.py
# trying C:\Python25\lib \site-packages\Python win
\_mydllpythonmo dule.pyw
# trying C:\Python25\lib \site-packages\Python win
\_mydllpythonmo dule.pyc
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named _mydllpythonmod ule

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iEYEARECAAYFAki JNGwACgkQLMI5fn dAv9hykgCcDf4cT ZU0iDo+ELQ5aFGs 9FIO
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-----END PGP SIGNATURE-----

Jul 25 '08 #2

jrh

Yes it is in the same directory. The problem is it does not seem to
look for dll's at all. So is this by design, or am I missing
something?

On 25 Juli, 10:03, Nick Dumas <drako...@gmail .comwrote:

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Is this DLL in the same directory as your script? If not, is it part of
your pythonpath? If neither are true, then you won't be able to import
it, regardless of whether it's a good file or not.

jrh wrote:
Hello,

From previous posts and documentation it seems python should be able
to import a module that is compiled into a .dll just as well as
a .pyd. I have a pyd that works fine, but after renaming it to dll the
import fails. Running python with -vv flag indicates it doesn't
actually look for the dll (see below). Has dll import been defeatured
in python?

Thanks!

>>import _mydllpythonmod ule
# trying _mydllpythonmod ule.pyd
# trying _mydllpythonmod ule.py
# trying _mydllpythonmod ule.pyw
# trying _mydllpythonmod ule.pyc
# trying C:\Python25\DLL s\_mydllpythonm odule.pyd
# trying C:\Python25\DLL s\_mydllpythonm odule.py
# trying C:\Python25\DLL s\_mydllpythonm odule.pyw
# trying C:\Python25\DLL s\_mydllpythonm odule.pyc
# trying C:\Python25\lib \_mydllpythonmo dule.pyd
# trying C:\Python25\lib \_mydllpythonmo dule.py
# trying C:\Python25\lib \_mydllpythonmo dule.pyw
# trying C:\Python25\lib \_mydllpythonmo dule.pyc
# trying C:\Python25\lib \lib-tk\_mydllpython module.pyd
# trying C:\Python25\lib \lib-tk\_mydllpython module.py
# trying C:\Python25\lib \lib-tk\_mydllpython module.pyw
# trying C:\Python25\lib \lib-tk\_mydllpython module.pyc
# trying C:\Python25\_my dllpythonmodule .pyd
# trying C:\Python25\_my dllpythonmodule .py
# trying C:\Python25\_my dllpythonmodule .pyw
# trying C:\Python25\_my dllpythonmodule .pyc
# trying C:\Python25\lib \site-packages\_mydll pythonmodule.py d
# trying C:\Python25\lib \site-packages\_mydll pythonmodule.py
# trying C:\Python25\lib \site-packages\_mydll pythonmodule.py w
# trying C:\Python25\lib \site-packages\_mydll pythonmodule.py c
# trying C:\Python25\lib \site-packages\win32\ _mydllpythonmod ule.pyd
# trying C:\Python25\lib \site-packages\win32\ _mydllpythonmod ule.py
# trying C:\Python25\lib \site-packages\win32\ _mydllpythonmod ule.pyw
# trying C:\Python25\lib \site-packages\win32\ _mydllpythonmod ule.pyc
# trying C:\Python25\lib \site-packages\win32\ lib
\_mydllpythonmo dule.pyd
# trying C:\Python25\lib \site-packages\win32\ lib\_mydllpytho nmodule.py
# trying C:\Python25\lib \site-packages\win32\ lib
\_mydllpythonmo dule.pyw
# trying C:\Python25\lib \site-packages\win32\ lib
\_mydllpythonmo dule.pyc
# trying C:\Python25\lib \site-packages\Python win
\_mydllpythonmo dule.pyd
# trying C:\Python25\lib \site-packages\Python win\_mydllpytho nmodule.py
# trying C:\Python25\lib \site-packages\Python win
\_mydllpythonmo dule.pyw
# trying C:\Python25\lib \site-packages\Python win
\_mydllpythonmo dule.pyc
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named _mydllpythonmod ule

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (MingW32)
Comment: Using GnuPG with Mozilla -http://enigmail.mozdev .org

iEYEARECAAYFAki JNGwACgkQLMI5fn dAv9hykgCcDf4cT ZU0iDo+ELQ5aFGs 9FIO
8GEAn3+egrPDtNr lbsssqti8YeZXXI eM
=q31k
-----END PGP SIGNATURE-----

Jul 25 '08 #3

Fredrik Lundh

jrh wrote:

Yes it is in the same directory. The problem is it does not seem to
look for dll's at all. So is this by design, or am I missing
something?

looks like that was removed in 2.5; from Misc/NEWS:

- On Windows, .DLL is not an accepted file name extension for
extension modules anymore; extensions are only found if they
end in .PYD.

which is easily confirmed:

Python 2.4.3

>>import imp
imp.get_suffi xes()

[('.pyd', 'rb', 3), ('.dll', 'rb', 3), ('.py', 'U', 1),
('.pyw', 'U', 1), ('.pyc', 'rb', 2)]

Python 2.5

>>import imp
imp.get_suffi xes()

[('.pyd', 'rb', 3), ('.py', 'U', 1), ('.pyw', 'U', 1),
('.pyc', 'rb', 2)]

(the DLL support was a compatibility thing anyway, so I guess removing
it after 10+ years is a reasonable thing to do...)

</F>

Jul 25 '08 #4

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