Remove kw parameters from python version of `functools.reduce`

[sobolevn]

Feature or enhancement

It was scheduled to be removed in 3.16:

cpython/Lib/functools.py

Lines 1182 to 1208 in 4ae1a26

	def _warn_python_reduce_kwargs(py_reduce):
	@wraps(py_reduce)
	def wrapper(*args, **kwargs):
	if 'function' in kwargs or 'sequence' in kwargs:
	import os
	import warnings
	warnings.warn(
	'Calling functools.reduce with keyword arguments '
	'"function" or "sequence" '
	'is deprecated in Python 3.14 and will be '
	'forbidden in Python 3.16.',
	DeprecationWarning,
	skip_file_prefixes=(os.path.dirname(__file__),))
	return py_reduce(*args, **kwargs)
	return wrapper
	reduce = _warn_python_reduce_kwargs(reduce)
	del _warn_python_reduce_kwargs
	# The import of the C accelerated version of reduce() has been moved
	# here due to gh-121676. In Python 3.16, _warn_python_reduce_kwargs()
	# should be removed and the import block should be moved back right
	# after the definition of reduce().
	try:
	from _functools import reduce
	except ImportError:
	pass

Refs #121676
Refs #121677

Linked PRs

• gh-149537: Remove kw parameters from python version of reduce #149538