object.__format__ now contains the name of actual type.

Patch by Xiang Zhang.

PyUnicode_AsDecodedObject(), PyUnicode_AsDecodedUnicode() and
PyUnicode_AsEncodedUnicode().

subclasses of accelerated OrderedDict.

Patch by Xiang Zhang.

attributes.

new exception with setting current exception as __cause__.

_PyErr_FormatFromCause(exception, format, args...) is equivalent to Python

    raise exception(format % args) from sys.exc_info()[1]

Patch from Xiang Zhang.

It's not exactly the same than encodings.normalize_encoding(): the C function
also converts to lowercase.

Patch by Xiang Zhang.

type now is deprecated.  Patch by Oren Milman.

Patch by Oren Milman.

implicit initialization of the type instead of a fail.

Original patch by Niklas Koep.

Do perturb shift after first conflict.

message when pass a non-mapping as a var-keyword argument.

invalid keyword args.

Patch by Xiang Zhang.

since there is no dummy_struct any more.
Patch by Xiang Zhang.

Patch by Xiang Zhang.

instance.

Issue #28233: Fix a memory leak if the format string contains a non-ASCII
character, destroy the unicode writer.

 (Patch by Xiang Zhang)