Convert an encoded module name to an unencoded source uri

def module2uri(self, module_name):
        """Convert an encoded module name to an unencoded source uri"""
        encoded_str = super(EncodedModuleLoader, self).module2uri(module_name)
        encoded = encoded_str.encode('ASCII')
        compressed = base64.b64decode(encoded, b'+&')
        return zlib.decompress(compressed)