break someone's over specified test that depends on the exact error message.

when the path existed and had the S_ISGID mode bit set when it was not
explicitly asked for.  This is no longer an exception as mkdir cannot control
if the OS sets that bit for it or not.

'name' to 'expression' as the latter is what the string actually represents.
The bug in this issue was only catching NameError and AttributeError when
evaluating an expression that was not necessarily a name.

Code patch by Roger Serwy.

Initial patch by Michael Driscoll, I added the example.

options.  Patch by Roger Serwy.

Issue #14775: Fix a potential quadratic dict build-up due to the garbage collector repeatedly trying to untrack dicts.
Additional comments by Tim Silk.

An issue in ctypes.c_longdouble, ctypes.c_double, and ctypes.c_float that
caused an incorrect exception to be returned in the case of overflow has been
fixed.

Patch by Roger Serwy.

Original patch by Roger Serwy.

even when parent window is closed. Patch by Roger Serwy.

Patch by Roger Serwy.

Fix suggested by Itay Brandes

Patch by Victor Stinner.

There's no bufsize argument anymore, and os.fdopen() is only a very
thin wrapper around open() anymore. Change the documentation to
reflect that.

Patch by Matej Cepl.

Reverts some changes of d13fdd97cc8e.