def _init():
    """
    Internal function to install the module finder.
    """
    global finder

    if finder is None:
        finder = ModuleFinder()

    if finder not in sys.meta_path:
        sys.meta_path.insert(0, finder)
def _init ( ) : global finder if finder is None : finder = ModuleFinder ( ) if finder not in sys . meta_path : sys . meta_path . insert ( 0 , finder )
Internal function to install the module finder.