Windows64 installation from prebuilt Python package is broken

[Hans den Boer]

Using the Google.OrTools.python.Windows64.2322.zip package, the installation breaks down immediately on a missing ')' in line 16 of the setup.py script.

I saw that in the mean time the setup.py script has been updated in the subversion repository to correct this error.

Continuing from this point, the installation stalls on the absence of constraint_solver\_pywrapcp.dll:

installing package data to build\bdist.win-amd64\egg

running install_data

error: can't copy 'constraint_solver\_pywrapcp.dll': doesn't exist or not a regular file

I do observe a _pywrapcp.pyd file in the indicated directory and changing the dll extension to pyd for _pywrapcp and other files in setup.py does help to get a setup that runs to completion. 

However, when you subsequently run one of the examples, e.g., examples\3_jugs_mip.py, I get the following error.

Traceback (most recent call last):

  File "examples\3_jugs_mip.py", line 31, in <module>

    from linear_solver import pywraplp

  File "C:\Python27\lib\site-packages\or_tools-1.0.2322-py2.7.egg\linear_solver\pywraplp.py", line 26, in <module>

    _pywraplp = swig_import_helper()

  File "C:\Python27\lib\site-packages\or_tools-1.0.2322-py2.7.egg\linear_solver\pywraplp.py", line 22, in swig_import_he

lper

    _mod = imp.load_module('_pywraplp', fp, pathname, description)

ImportError: DLL load failed: The specified module could not be found.

This is where I am stuck.

[Petter]

You are probably missing a DLL file _pywrapcp.pyd needs. I have run this successfully using the fixes you mentioned. 

Try installing the Visual Studio runtimes 2008 and possible 2010 and see if that helps.

[Laurent Perron]

Actually, on windows, you do not need dlls, you need to rename them to pyd.

I will have a look.

Thanks

--
You received this message because you are subscribed to the Google Groups "or-tools-discuss" group.
To unsubscribe from this group and stop receiving emails from it, send an email to or-tools-discu...@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
 
 

--
--Laurent