A path configuration file is a file whose name has the form :file:`{name}.pth`
and exists in one of the four directories mentioned above; its contents are
additional items (one per line) to be added to ``sys.path``. Non-existing items
-are never added to ``sys.path``, and no check is made that the item refers to a
-directory rather than a file. No item is added to ``sys.path`` more than
+are never added to ``sys.path``. No item is added to ``sys.path`` more than
once. Blank lines and lines beginning with ``#`` are skipped. Lines starting
with ``import`` (followed by space or tab) are executed.