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Utkarsh Ayachit authored
VTK now includes a Utilities module, vtkPythonInterpreter that provides a Python interpreter. While its use it totally optional, it helps in applications with embedded Python interpreter, such as ParaView. vtkMatplotlibMathTextUtilities now uses vtkPythonInterpreter to initialize Python. This enables applications to setup Python environment as needed witout directly having to hack environment variables to setup matplotlib environment. Since vtkPythonInterpreter allows applications to initialize/finalize Python interpreter mutliple times, fixed vtkPythonCommand to cleanup PyObject/PyThreadState pointers when Python interpreter is exitted. Change-Id: I80ed56fc3f64dda2766a6aa2e6e92c3aa7290993
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