[C++-sig] boost_python_debug pulls in python24.dll => "ImportError: Module use of python24.dll conflicts with this version of Python" ?

[Bill Davy]

I am having trouble using boost_python.  The final error is:

>>> import PIF
# trying PIF_d.pyd
h:\kestrel\version1\pif\pif.cpp: process attached
h:\kestrel\version1\pif\pif.cpp: process detached
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
ImportError: Module use of python24.dll conflicts with this version of
Python.
[19235 refs]
>>>

But let me start a bit earlier ...

My main() loads a couple of DLL by hand using LoadLibraryEx(), successfully.
The first is the DLL I intend to wrap, the second is boost_python:

Trying LoadLibraryEx(H:\Kestrel\Version1\Machine\Debug\Machine.dll)
h:\kestrel\version1\machine\machine.cpp: process attached
<<<<<< message from DllMain() in Machine.dll
LoadLibraryEx(H:\Kestrel\Version1\Machine\Debug\Machine.dll) loaded

Trying
LoadLibraryEx(H:\Boost\boost_1_33_0\libs\python\build\bin-stage\boost_python
_debug.dll)
LoadLibraryEx(H:\Boost\boost_1_33_0\libs\python\build\bin-stage\boost_python
_debug.dll) loaded

And then I call PyMain():

Calling Py_Main()
# installing zipimport hook
import zipimport # builtin
# installed zipimport hook
# trying H:\Husky\HostPC\Python-2.4.1\PCbuild\python24_d.zip\site_d.pyd
# trying H:\Husky\HostPC\Python-2.4.1\PCbuild\python24_d.zip\site_d.dll
# trying H:\Husky\HostPC\Python-2.4.1\PCbuild\python24_d.zip\site.py
# trying H:\Husky\HostPC\Python-2.4.1\PCbuild\python24_d.zip\site.pyw
# trying H:\Husky\HostPC\Python-2.4.1\PCbuild\python24_d.zip\site.pyc
# trying C:\Python24\Lib\site_d.pyd
# trying C:\Python24\Lib\site_d.dll
# trying C:\Python24\Lib\site.py
# C:\Python24\Lib\site.pyc matches C:\Python24\Lib\site.py

Snip snip

I just want to get the encoding out of the way so let's say "hello":

>>> "hello"
# trying C:\Python24\Lib\encodings\cp850_d.pyd
# trying C:\Python24\Lib\encodings\cp850_d.dll
# trying C:\Python24\Lib\encodings\cp850.py
# C:\Python24\Lib\encodings\cp850.pyc matches
C:\Python24\Lib\encodings\cp850.py

import encodings.cp850 # precompiled from
C:\Python24\Lib\encodings\cp850.pyc
'hello'
[19197 refs]

And now to trigger the error:

>>> import PIF
# trying PIF_d.pyd
h:\kestrel\version1\pif\pif.cpp: process attached                    <<<<<<
message from DllMain() in PIF_d.pyd
h:\kestrel\version1\pif\pif.cpp: process detached                    <<<<<<
message from DllMain() in PIF_d.pyd
Traceback (most recent call last):
  File "<stdin>", line 1, in ?
ImportError: Module use of python24.dll conflicts with this version of
Python.
[19235 refs]	
>>>

In the meantime, the MSVC window has noted the following comings and goings:

'RunPy.exe': Loaded 'H:\Kestrel\Version1\RunPy\Debug\RunPy.exe', Symbols
loaded.
'RunPy.exe': Loaded 'C:\WINDOWS\system32\ntdll.dll', No symbols loaded.
'RunPy.exe': Loaded 'C:\WINDOWS\system32\kernel32.dll', No symbols loaded.
'RunPy.exe': Loaded 'H:\Husky\HostPC\Python-2.4.1\PCbuild\python24_d.dll',
Symbols loaded.       <<< Here is the Python interpreter
'RunPy.exe': Loaded 'C:\WINDOWS\system32\user32.dll', No symbols loaded.
'RunPy.exe': Loaded 'C:\WINDOWS\system32\gdi32.dll', No symbols loaded.

Snip snip

'RunPy.exe': Loaded 'C:\WINDOWS\system32\comctl32.dll', No symbols loaded.
'RunPy.exe': Unloaded 'C:\WINDOWS\system32\shimeng.dll'
'RunPy.exe': Loaded 'H:\Kestrel\Version1\Machine\Debug\Machine.dll', Symbols
loaded.
'RunPy.exe': Loaded
'H:\Boost\boost_1_33_0\libs\python\build\bin-stage\boost_python_debug.dll',
No symbols loaded.
'RunPy.exe': Loaded 'H:\Husky\HostPC\Python-2.4.1\PCbuild\python24.dll',
Symbols loaded.          <<<< Why this is loaded?
'RunPy.exe': Loaded 'C:\WINDOWS\system32\msvcr71.dll', Symbols loaded.
'RunPy.exe': Loaded 'C:\WINDOWS\system32\msvcp71d.dll', Symbols loaded.
'RunPy.exe': Loaded 'H:\Kestrel\Version1\RunPy\PIF_d.pyd', Symbols loaded.
'RunPy.exe': Unloaded 'H:\Kestrel\Version1\RunPy\PIF_d.pyd'


H:\Husky\HostPC\Python-2.4.1\PCbuild\python24_d.dll
07/06/2005  15:36
H:\Boost\boost_1_33_0\libs\python\build\bin-stage\boost_python_debug.dll
05/12/2005  15:25
H:\Husky\HostPC\Python-2.4.1\PCbuild\python24.dll
22/06/2005  11:33

I built boost_python_debug.dll using the following batch file:

H:\Boost\boost-jam-3.1.11-1-ntx86\bjam "-sVC71_ROOT=C:\Program
Files\Microsoft Visual Studio.NET 2003\Vc7" "-sPYTHON_VERSION=2.4"
--with-python-root=H:\Kestrel\Python-2.4.1

The batch files runs in the directory H:\Boost\ boost_1_33_0

So:
(1) boost_python_debug should be a debug version but it seems to pull in
python24.dll even though python24_d.dll was already loaded.
(2) I am getting "ImportError: Module use of python24.dll conflicts with
this version of Python", possibly as a result of (1).

I would be truly grateful for any assistance.

Thanks in advance,
   Bill

PS If there is a UK genius I am happy to pack up my laptop for a spot of
consultancy.  If I can get past these first few stumbling blocks, all will
be well.

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