Closes #13254.

variable in the default value of a keyword-only argument:
(lambda *, arg=GLOBAL_NAME: None)

Thanks to Robert Xiao.

Unicode string.

This is an incompatible change, but putp() is used to emit terminfo commands,
which are bytes strings, not Unicode strings.

New wording is taken straight from the PEP, so this time should be good
:)

Unicode string.

This is an incompatible change, but the previous behaviour was completly wrong.

- Actually check the contents of the file created by bdist_dumb.
- Don’t use “RECORD” as filename for non-PEP 376 record file
- Don’t start method name with “_test”, it smells like a disabled test
  method instead of an helper method
- Fix some idioms (assertIn, addCleanup)

#670664: Fix HTMLParser to correctly handle the content of ``<script>...</script>`` and ``<style>...</style>``.

PYTHONNOUSERSITE).  (Patch by Carl Meyer)

even when reporthook is None. Patch by Jyrki Pulliainen.

(Patch by Roger Serwy)

Issue 13274:  Make the pure python code for heapq more closely match the C implementation for an undefined corner case.