In cpython source code, where does Python call the user defined init when creating a class

Question

I am reading cpython source code class implementation, I knew the basic process of class definition and creation:

Class definition:

LOAD_BUILD_CLASS -> builtin___build_class__ -> meta -> type_call -> type_new

Class creation:

type_call -> type_new

And I knew the user defined functions are stored in the namespace and finally in the tp_dict of that type.

My question: User defined __init__ function is stored in the type->tp_dict, when python initializes a type it calls type->tp_init function. I can not find where in cpython source code the user defined __init__ function is called when initializing a class.

southriver · Accepted Answer · 2020-08-04 08:00:11Z

1

Find the result by myself, type_new will call PyType_Ready and fixup_slot_dispatchers, in later function user defined function will be handled in slots.

edited Aug 4, 2020 at 8:00

answered Aug 3, 2020 at 18:29

southriver

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