Split from PR 958: restoring the __import__ after shutdown. - #993
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filmor merged 1 commit intoNov 21, 2019
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When C# shuts down we should restore Python to its original state.
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AlexCatarino
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…t#993) When C# shuts down we should restore Python to its original state.
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When C# shuts down we should restore Python to its original state.
What does this implement/fix? Explain your changes.
This is adapted from the large patch that amos put in PR #958. It restores the import hook.
Does this close any currently open issues?
Not yet.
Any other comments?
I would have used the ShutdownHandler but that's only in the PythonEngine, whereas __import__ is in the Runtime. Maybe we should move the ShutdownHandler mechanism to the runtime?
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Can't really test this at the moment. After Py_Finalize (in Shutdown), we can't check the state of the __import__ function until we call Py_Initialize. But Py_Initialize will create a new __import__, so we can't see whether our code ran. This change only becomes relevant when we stop calling Py_Finalize in Shutdown.