[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

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转载自www.cnblogs.com/hugetong/p/12632856.html