cookie_storage.py 文件源码

def read(self):
        """
        Returns the cookie if valid and exists, None otherwise.
        """
        if self.exists():
            with open(config.cdms_cookie_path, 'rb') as f:
                try:
                    ciphertext = self.crypto.decrypt(f.read())
                    return pickle.loads(ciphertext)
                except (InvalidToken, TypeError):
                    self.reset()
        return None