Issue 10626 investigation: regrtest now checks for alterations to the logging state in the current process (and yes, test_pydoc alters it)

even where os.symlink is not supported.

UnicodeEncodeError.

#7245: Add a SIGINT handler on continue in pdb that allows to break a program again by pressing Ctrl-C.

70% coverage at the moment (not tragic but needs work).

Removed static function complex_format, moved it into complex_repr. Modified tests to check both str and repr, which are the same for complex.

Use copysign to produce appropriately signed zeros instead of trying to worm around possible compiler optimizations.

 were ensured to be strings but section names and option keys were not.
 Behaviour unchanged for RawConfigParser and ConfigParser.