Introduce _collections.OrderedDict type (a.k.a. collections.OrderedDict) #3418

Feature

When you see the collections module, there are two versions of collections.OrderedDict, pure Python implementation and implemented in CPython C code.

To check compatibility, run the below lines:

from _collections  import OrderedDict

It is not incompatible in public exposed APIs so you can close this issue if it is useless.

Python Documentation

• https://github.com/python/cpython/blob/v3.10.0/Objects/odictobject.c
• https://docs.python.org/3/library/collections.html?highlight=ordereddict#collections.OrderedDict