Pablo Galindo Salgado <pablog...@gmail.com> added the comment:

The problem is that this is wrong:

https://github.com/python/cpython/blob/f171877ebe276749f31386baed5841ce37cbee2e/Modules/_sqlite/statement.c#L411-L423

1) tp_clear should *not* do anything other than cleaning refs to python objects
2) sqlite3_finalize is called without the GIL but that can trigger a call to 
the destructor of the session (_destructor()) that executes Python code

----------
stage: patch review -> 

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue44304>
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