broke backwards compatibility.

statement, but add a comment that clarifies the purpose of the code.

it left off.  Patch by Michael Birtwell.

Issue #17289: The readline module now plays nicer with external modules or applications changing the rl_completer_word_break_characters global variable.
Initial patch by Bradley Froehle.

platforms. Patch by Federico Schwindt.

Patch by Chris Rebert.

Putting *n* after the *iterable* matches the signature of other itertools
and recipes.  Also, it reads better.

Suggested by Ezio Melotti.

(thanks Arfrever for reporting).

legitimately false.

Issue #17408: Avoid using an obsolete instance of the copyreg module when the interpreter is shutdown and then started again.

trying to load an extension module.

While at it, also add a proper unittest.skipIf() guard to another test
involving imp.load_dynamic().

descriptor supported.