Function _get_revised_path

Lib/pydoc.py:2714–2738

Ensures current directory is on returned path, and argv0 directory is not Exception: argv0 dir is left alone if it's also pydoc's directory. Returns a new path entry list, or None if no adjustment is needed.

(given_path, argv0)

    return isinstance(x, str) and x.find(os.sep) >= 0

def _get_revised_path(given_path, argv0):
    """Ensures current directory is on returned path, and argv0 directory is not

    Exception: argv0 dir is left alone if it's also pydoc's directory.

    Returns a new path entry list, or None if no adjustment is needed.
    """
    # Scripts may get the current directory in their path by default if they're
    # run with the -m switch, or directly from the current directory.
    # The interactive prompt also allows imports from the current directory.

    # Accordingly, if the current directory is already present, don't make
    # any changes to the given_path
    if '' in given_path or os.curdir in given_path or os.getcwd() in given_path:
        return None

    # Otherwise, add the current directory to the given path, and remove the
    # script directory (as long as the latter isn't also pydoc's directory.
    stdlib_dir = os.path.dirname(__file__)
    script_dir = os.path.dirname(argv0)
    revised_path = given_path.copy()
    if script_dir in given_path and not os.path.samefile(script_dir, stdlib_dir):
        revised_path.remove(script_dir)
    revised_path.insert(0, os.getcwd())
    return revised_path


# Note: the tests only cover _get_revised_path, not _adjust_cli_path itself