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Python 3.9 support

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Remove PyEval_InitThreads() call for Python 3.7 and later as Python calls
it automatically now. This removes a deprecation warning when using Python 3.9.

https://docs.python.org/3/c-api/init.html#c.PyEval_InitThreads
This commit is contained in:
William S Fulton 2020-08-16 10:07:45 +01:00
commit 9c50887daa
2 changed files with 10 additions and 2 deletions
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4
CHANGES.current
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@ -7,6 +7,10 @@ the issue number to the end of the URL: https://github.com/swig/swig/issues/
Version 4.1.0 (in progress)
===========================
2020-08-16: wsfulton
[Python] Remove PyEval_InitThreads() call for Python 3.7 and later as Python calls
it automatically now. This removes a deprecation warning when using Python 3.9.
2020-08-15: wsfulton
[Python] All Python examples and tests are written to be Python 2 and Python 3
compatible, removing the need for 2to3 to run the examples or test-suite.

8
Lib/python/pythreads.swg
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@ -8,8 +8,12 @@
# define SWIG_PYTHON_USE_GIL
# endif
# if defined(SWIG_PYTHON_USE_GIL) /* Use PyGILState threads calls */
# ifndef SWIG_PYTHON_INITIALIZE_THREADS
# define SWIG_PYTHON_INITIALIZE_THREADS PyEval_InitThreads()
# if !defined(SWIG_PYTHON_INITIALIZE_THREADS)
# if PY_VERSION_HEX < 0x03070000
# define SWIG_PYTHON_INITIALIZE_THREADS PyEval_InitThreads()
# else
# define SWIG_PYTHON_INITIALIZE_THREADS
# endif
# endif
# ifdef __cplusplus /* C++ code */
class SWIG_Python_Thread_Block {