| The ``sys.path[0]`` initialization change for bpo-29139 caused a regression | |
| by revealing an inconsistency in how sys.path is initialized when executing | |
| ``__main__`` from a zipfile, directory, or other import location. The | |
| interpreter now consistently avoids ever adding the import location's parent | |
| directory to ``sys.path``, and ensures no other ``sys.path`` entries are | |
| inadvertently modified when inserting the import location named on the | |
| command line. |