19.10.20 20:39, Marco Sulla пише: > TL;DR Is it possible to use C code to implement the (un)pickling of an > type written in a C extension, as it was written in _pickle.c? > > Long explaining: I'm trying to create a C extension for frozendict. For > simplicity, first I wrote it in CPython, then I started to move it in a > C extension. It seems to work, but I have to move the code I wrote in > _pickle.c and pickle.py in the C extension. Is it possible, or I have to > create a slower `__reduce_ex__` method that simply converts it to dict? > > This is, for example, the C code for pickling frozendict in _pickle.c: > https://github.com/Marco-Sulla/cpython/blob/41a640a947c36007e56bbc28f362c261110d2001/Modules/_pickle.c#L3370
For adding new opcode to the pickle format you need a new pickle version and a PEP. Implement __reduce_ex__, it is the way to support pickling of new types (as it was for sets, bytearrays, and many extension types). _______________________________________________ Python-Dev mailing list -- python-dev@python.org To unsubscribe send an email to python-dev-le...@python.org https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at https://mail.python.org/archives/list/python-dev@python.org/message/WLBLDASK25BWANWS347U4HIOBA763IEW/ Code of Conduct: http://python.org/psf/codeofconduct/
