Issue #18910: Add unittest for textView. Patch by Phil Webster.
Merge heads from 3.4.
whitespace
Merge with 3.4
Issue #21663: Fixed error caused by trying to create an existing directory.
Closes #21663: Merged fix from 3.4.
Tulip issue 83, Python issue #21252: Fill some XXX docstrings in asyncio
(Merge 3.4) Tulip issue 83, Python issue #21252: Fill some XXX docstrings in asyncio