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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def open(self, session_file=None,session_url=None, verbose=False):
 """ Opens a session from a local file or URL. :param session_file: The path to the session file (.cys) to be loaded. :param session_url: A URL that provides a session file. :param verbose: print more """


        PARAMS=set_param(["file", "url"],[session_file, session_url])
        response=api(url=self.__url+"/open", PARAMS=PARAMS, verbose=verbose)
        return response