[issue6081] str.format_from_mapping()

[Eric Smith]

Eric Smith <eric at trueblade.com> added the comment:

I agree with David.

Although it's not clear to my why the code doesn't just work with the addition of do_string_format_using_mapping and without the other code. It's possible the existing code is too dict-specific and should be calling a more generic PyObject interface, like PyMapping_GetItemString instead of PyDict_GetItem.

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