#17479: test_io now works with unittest test discovery.  Patch by Zachary Ware.
Issue 17447:  Clarify that str.isidentifier doesn't check for reserved keywords.
Update collections ABC table to match the __abstractmethods__ attribute for each container.
Fixes issue #17488: Change the subprocess.Popen bufsize parameter default value
from unbuffered (0) to buffering (-1) to match the behavior existing code
expects and match the behavior of the subprocess module in Python 2 to avoid
introducing hard to track down bugs.
Fixes issue #17488: Change the subprocess.Popen bufsize parameter default value
from unbuffered (0) to buffering (-1) to match the behavior existing code
expects and match the behavior of the subprocess module in Python 2 to avoid
introducing hard to track down bugs.
Clean up references to threads in test_queue.
Merge test_queue clean up from 3.2.
Fixes issue4653 - Correctly specify the buffer size to FormatMessageW and
correctly check for errors on two CreateFileMapping calls.
#17504: remove duplicated sentence.  Patch by Radu Voicilas.