Function addsitedir

Lib/site.py:234–257

Add 'sitedir' argument to sys.path if missing and handle .pth files in 'sitedir

(sitedir, known_paths=None)

def addsitedir(sitedir, known_paths=None):
    """Add 'sitedir' argument to sys.path if missing and handle .pth files in
    'sitedir'"""
    _trace(f"Adding directory: {sitedir!r}")
    if known_paths is None:
        known_paths = _init_pathinfo()
        reset = True
    else:
        reset = False
    sitedir, sitedircase = makepath(sitedir)
    if not sitedircase in known_paths:
        sys.path.append(sitedir)        # Add path component
        known_paths.add(sitedircase)
    try:
        names = os.listdir(sitedir)
    except OSError:
        return
    names = [name for name in names
             if name.endswith(".pth") and not name.startswith(".")]
    for name in sorted(names):
        addpackage(sitedir, name, known_paths)
    if reset:
        known_paths = None
    return known_paths


def check_enableusersite():