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Scott Wittenburg authored
Added a CMake file with two macros that support finding Python modules on the system in a slightly more efficient way. One of the goals is that hereafter we will only need to run the external Python process once for each module we need to test, and we will cache the results so that subsequent checks can avoid the additional overhead. There were two CMakeLists.txt where we were checking for the presence of matplotlib, and these have been changed to demonstrate how the new macros will be used. As soon as these changes are accepted into VTK, we would like to start using them in a similar fashion from the paraview web testing framework. Change-Id: I5439b10a4d8c0f8dc0b4209bbd429b104ef7c9c2
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