baselines/her/experiment/config.py
def cached_make_env(make_env):
    """
    Only creates a new environment from the provided function if one has not yet already been
    created. This is useful here because we need to infer certain properties of the env, e.g.
    its observation and action spaces, without any intend of actually using it.
    """
    if make_env not in CACHED_ENVS:
        env = make_env()
        CACHED_ENVS[make_env] = env
    return CACHED_ENVS[make_env]
def cached_make_env(make_env):
    """
    Only creates a new environment from the provided function if one has not yet already been
    created. This is useful here because we need to infer certain properties of the env, e.g.
    its observation and action spaces, without any intend of actually using it.
    """
    if make_env not in CACHED_ENVS:
        env = make_env()
        CACHED_ENVS[make_env] = env
    return CACHED_ENVS[make_env]
Only creates a new environment from the provided function if one has not yet already been
    created. This is useful here because we need to infer certain properties of the env, e.g.
    its observation and action spaces, without any intend of actually using it.