Check items when the imported python module does not work as expected

Sometimes when I imported a module that was python, it didn't work as expected. At that time, I checked the following items. Write in cv2 as an example.

-[] Check the version of python started by the python command

Linux $ which python

-[] Check the path where the python third party module is located -[] Check the version of the imported module

>>> import cv2
>>> cv2.__version__
'2.4.11'

-[] Check the file name of the imported module

>>> cv2.__file__
'C:\\Python27\\lib\\site-packages\\cv2.pyd'

You can check if an unintended version is running by doing such a check.

Further necessary check items --Conditions when building the library --Are you using OpenMP? --Are you using Cuda? --Other build conditions

>>> print cv2.getBuildInformation()

General configuration for OpenCV 2.4.11 =====================================
  Version control:               2.4.11

  Platform:
    Host:                        Windows 6.1 AMD64
    CMake:                       2.8.11.2
    CMake generator:             Visual Studio 10
    CMake build tool:            C:/Windows/Microsoft.NET/Framework/v4.0.30319/MSBuild.exe
    MSVC:                        1600

  C/C++:
    Built as dynamic libs?:      NO
(Omitted below)

  Other third-party libraries:
    Use IPP:                     NO
    Use Eigen:                   NO
    Use TBB:                     NO
    Use OpenMP:                  NO
    Use GCD                      NO
    Use Concurrency              YES
    Use C=:                      NO
    Use Cuda:                    NO
    Use OpenCL:                  YES