by adding a new tag.  Patch by Mark Roseman. Also give <pre> text a very
light blueish-gray background similar to that used by Sphinx html.

Patch by Benjamin Hodgson.

Patch written by Prashant Tyagi.

to finish making current README.txt obsolete.

Some were missing and notes were not correct.

Some of the details of comparing mixed types were incorrect or ambiguous.
NotImplemented is only relevant at a lower level than the Expressions
chapter. Added details of comparing range() objects, and default behaviour
and consistency suggestions for user-defined classes. Patch from Andy Maier.

so it is not triggered on import.  The problem is creation of a now-unused
instance "helpDialog = HelpDialog()", left for back compatibility.
So instead trigger the warning when that instance or another is used.

This restores the ability to write encoding names in uppercase like "UTF-8",
which worked in Python 2.

Patch by Mark Roseman.

Issue #19143: platform module now reads Windows version from kernel32.dll to avoid compatibility shims.

Issue #19143: platform module now reads Windows version from kernel32.dll to avoid compatibility shims.