[python] python函数定义里后边那个箭头是干嘛的

如题又如图

def add(x:int, y:int) -> int:
    return x + y

答:

是注释。前边的:int也是。见:

https://python3-cookbook.readthedocs.io/zh_CN/latest/c07/p03_attach_informatinal_matadata_to_function_arguments.html

posted on 2020-04-04 17:39  toong  阅读(4792)  评论(0编辑  收藏  举报