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typing 是python3.5中开始新增的专用于类型注解(type hints)的模块,为python程序提供静态类型检查,如下面的greeting函数规定了参数name的类型是str,返回值的类型也是str。 def greeting(name: str) -> str: return 'Hello ' + name 1. 2. 在实践中,该模块常用的类型有 Any, Union, Tuple, Callable, TypeVar,...