Issue #22138: Fix mock.patch behavior when patching descriptors. Restore
original values after patching.

Patch contributed by Sean McCully.

original values after patching.

Patch contributed by Sean McCully.

Thanks to Berker Peksag for the patch review.

Issue20969 - Set the Epub Author and Epub Publisher in Python docs.

Patch from Upendra Kumar.

Patch by Cory Benfield.

Add another try/except PermissionError to avoid depending on listdir order. Fix issues #24120 and #26012. (Merge 3.5->3.6)

Add another try/except PermissionError to avoid depending on listdir order. Fix issues #24120 and #26012. (Merge 3.4->3.5)

Add another try/except PermissionError to avoid depending on listdir order. Fix issues #24120 and #26012.

Patch by Davin Potts and Camilla Montonen.

Patch by Davin Potts and Camilla Montonen.

Issue16544 - Add a link to an external documentation resource in ast module docs.

Issue16544 - Add a link to an external documentation resource in ast module docs.

Issue #26012: Don't traverse into symlinks for ** pattern in pathlib.Path.[r]glob(). (Merge 3.5->3.6)

Issue #26012: Don't traverse into symlinks for ** pattern in pathlib.Path.[r]glob(). (Merge 3.4->3.5)

Issue24898 - Improve str.find documentation.

Simplify str.find explaination as per Georg Brandl's suggestion.