client.py 文件源码

def from_json(cls, json_data):
        # TODO(issue 388): eliminate the circularity that is the reason for
        #                  this non-top-level import.
        from oauth2client.service_account import ServiceAccountCredentials
        data = json.loads(_from_bytes(json_data))

        # We handle service_account.ServiceAccountCredentials since it is a
        # possible return type of GoogleCredentials.get_application_default()
        if (data['_module'] == 'oauth2client.service_account' and
            data['_class'] == 'ServiceAccountCredentials'):
            return ServiceAccountCredentials.from_json(data)

        token_expiry = _parse_expiry(data.get('token_expiry'))
        google_credentials = cls(
            data['access_token'],
            data['client_id'],
            data['client_secret'],
            data['refresh_token'],
            token_expiry,
            data['token_uri'],
            data['user_agent'],
            revoke_uri=data.get('revoke_uri', None))
        google_credentials.invalid = data['invalid']
        return google_credentials