imp.py 文件源码

def load_package(name, path):
    msg = ('imp.load_package() is deprecated; use either '
           'importlib.machinery.SourceFileLoader() or '
           'importlib.machinery.SourcelessFileLoader() instead')
    warnings.warn(msg, DeprecationWarning, 2)
    if os.path.isdir(path):
        extensions = (machinery.SOURCE_SUFFIXES[:] +
                      machinery.BYTECODE_SUFFIXES[:])
        for extension in extensions:
            path = os.path.join(path, '__init__'+extension)
            if os.path.exists(path):
                break
        else:
            raise ValueError('{!r} is not a package'.format(path))
    return _bootstrap.SourceFileLoader(name, path).load_module(name)