20.09.19 22:19, Vinay Sajip via Python-Dev пише:
I just ran an analysis of static variable definitions in CPython code, using
clang, on Ubuntu and Windows. The results should be available here:
https://cpython.red-dove.com/
As I understand it, _Py_IDENTIFIER instances are supposed to hold constant strings that are used in
Python - e.g. "__class__", "__dict__" and so on. I noticed that there are
numerous duplicates of these - e.g. 8 instances of __name__, 11 instances of __dict__, and so on -
each instance is defined as static in its source file and so completely distinct from the others.
Note that corresponding strings are interned, so all
_Py_IDENTIFIER(__name__) share the same Python object.
There is also the _PyArg_Parser structure which contains reference to
the lazy initialized tuple of strings.
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