that do not have the ioctl FIOCLEX and FIONCLEX commands

This also eliminats a dead link to Weave in the process.

that is not found

require ASCII right argument and assert this condition in debug build.

The latter function is more readable, faster and doesn't raise exceptions.

Based on patch by Xiang Zhang.

The latter function is more readable, faster and doesn't raise exceptions.

Based on patch by Xiang Zhang.

The latter function is more readable, faster and doesn't raise exceptions.

The latter function is more readable, faster and doesn't raise exceptions.

on platforms that do not have langinfo

incorrectly formats %V or %G for the last or the first
incomplete week in a year

would raise ImportError

Issue #28691: Fix warn_invalid_escape_sequence(): handle correctly
DeprecationWarning raised as an exception. First clear the current exception to
replace the DeprecationWarning exception with a SyntaxError exception.

Unit test written by Serhiy Storchaka.

Per suggestions by Ivan Levkivskyi.
Patch by Elvis Pranskevichus.