_python3.py 文件源码

def install(compiler, suffixes):
    filefinder = [(f, i) for i, f in enumerate(sys.path_hooks)
                  if repr(f).find('.path_hook_for_FileFinder') != -1]
    if filefinder:
        filefinder, fpos = filefinder[0]
        sys.path_hooks[fpos] = PolyFileFinder.path_hook(*(_suffixer(_get_supported_file_loaders())))
        sys.path_importer_cache = {}
        pkgutil.iter_importer_modules.register(PolyFileFinder, _poly_file_finder_modules)

    PolyFileFinder._install(compiler, suffixes)