def register(self, env_id, entry_point):
        ''' Register an environment

        Args:
            env_id (string): The name of the environent
            entry_point (string): A string the indicates the location of the envronment class
        '''
        if env_id in self.env_specs:
            raise ValueError('Cannot re-register env_id: {}'.format(env_id))
        self.env_specs[env_id] = EnvSpec(env_id, entry_point)
 Register an environment

        Args:
            env_id (string): The name of the environent
            entry_point (string): A string the indicates the location of the envronment class
        
rlcard/envs/registration.py