bpo-32381: Fix PyRun_SimpleFileExFlags() encoding (GH-23642)
Fix encoding name when running a ".pyc" file on Windows: PyRun_SimpleFileExFlags() now uses the correct encoding to decode the filename. * Add pyrun_file() subfunction. * Add pyrun_simple_file() subfunction. * PyRun_SimpleFileExFlags() now calls _Py_fopen_obj() rather than _Py_fopen().
bpo-42536: GC track recycled tuples (GH-23623)
Several built-in and standard library types now ensure that their internal result tuples are always tracked by the garbage collector: - collections.OrderedDict.items - dict.items - enumerate - functools.reduce - itertools.combinations - itertools.combinations_with_replacement - itertools.permutations - itertools.product - itertools.zip_longest - zip Previously, they could have become untracked by a prior garbage collection.