DualFlow/algorithm/uf_rl/__init__.py

from algorithm.uf_rl.dqn_decide import DQNDecide

# 模块级变量类型声明, 变量名称不要与模块下的脚本名称同名
dqn_decide_model: DQNDecide

def __getattr__(name):
    global dqn_decide_model
    # 全局单例 + 惰性加载
    if name == "dqn_decide_model":
        dqn_decide_model = DQNDecide()
        return dqn_decide_model
    raise AttributeError(f"module '{__name__!r}' has no attribute '{name!r}'")