pwd.py 文件源码

def _open_asset_path(path, encoding=None):
    """
    :param asset_path:
        string containing absolute path to file,
        or package-relative path using format
        ``"python.module:relative/file/path"``.

    :returns:
        filehandle opened in 'rb' mode
        (unless encoding explicitly specified)
    """
    if encoding:
        return codecs.getreader(encoding)(_open_asset_path(path))
    if os.path.isabs(path):
        return open(path, "rb")
    package, sep, subpath = path.partition(":")
    if not sep:
        raise ValueError("asset path must be absolute file path "
                         "or use 'pkg.name:sub/path' format: %r" % (path,))
    return pkg_resources.resource_stream(package, subpath)


#: type aliases