querystringsafe_base64.py 文件源码

def encode(to_encode):
    """
    Encode an arbitrary string as a base64 that is safe to put as a URL query value.

    urllib.quote and urllib.quote_plus do not have any effect on the
    result of querystringsafe_base64.encode.

    :param (str, bytes) to_encode:
    :rtype: str
    :return: a string that is safe to put as a value in an URL query
        string - like base64, except characters ['+', '/', '='] are
        replaced with ['-', '_', '.'] consequently
    """
    encoded = urlsafe_b64encode(to_encode).replace(b'=', b'.')
    if PY2:
        return encoded
    return encoded.decode()