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def say_hi(name: str, age: int) -> str:
"""
Hi!
"""
# your code here
return "Hi. My name is %s and I'm %d years old" % (name, age)
if __name__ == '__main__':
#These "asserts" using only for self-checking and not necessary for auto-testing
assert say_hi("Alex", 32) == "Hi. My name is Alex and I'm 32 years old", "First"
assert say_hi("Frank", 68) == "Hi. My name is Frank and I'm 68 years old", "Second"
print('Done. Time to Check.')
------------------------------------------------------------------------------
我不太明白 say_hi(name: str, age: int) -> str:这个函数头是什么含义。name: str, age: int 是不是 C 里边的类型声明？-> str:这块完全不理解。
google 能力有限，求各位大佬解答，谢谢。
"""
Hi!
"""
# your code here
return "Hi. My name is %s and I'm %d years old" % (name, age)
if __name__ == '__main__':
#These "asserts" using only for self-checking and not necessary for auto-testing
assert say_hi("Alex", 32) == "Hi. My name is Alex and I'm 32 years old", "First"
assert say_hi("Frank", 68) == "Hi. My name is Frank and I'm 68 years old", "Second"
print('Done. Time to Check.')
------------------------------------------------------------------------------
我不太明白 say_hi(name: str, age: int) -> str:这个函数头是什么含义。name: str, age: int 是不是 C 里边的类型声明？-> str:这块完全不理解。
google 能力有限，求各位大佬解答，谢谢。
 | 1 Arnie97 May 20, 2018 via Android  1 Type annotations https://stackoverflow.com/q/32557920 |
 | 2 threee333 May 20, 2018 via Android 1 这玩意叫 annotation （注解），Python3 新加的特性。IDE 会根据注解信息来提供相应的方法。 代码里一般用不到～如果想玩玩的话，去看看 inspect 模块吧～ |
 | 3 lxian2 May 20, 2018 1 type hint, 标记参数 /返回的类型，帮助 IDE 或者其他工具更准确的帮你做类型检查 /重构。（像 python 这样的鸭子类型的语言工具没办法准确 refactoring) |
 | 4 mseasons May 20, 2018 google "Python 函数 冒号" |
 | 5 afpro May 20, 2018 type hints 就是暗示 IDE 你方法参数和返回值的类型 如果使用的 python 版本比较低 也可以在注释里面通过 :type 和 :rtype 暗示 IDE |
 | 6 msg7086 May 20, 2018 > name: str 你见过哪个 C 语言代码是这么写类型的？你说 Pascal 里的也就算了…… |
 | 7 RedFlag2233 May 20, 2018 via Android python cookbook3 上第 224 页 |
 | 8 Kendall May 20, 2018 via Android 不是强制的 函数参数类型的注释 |
 | 9 xiaoheijw May 20, 2018 1 这个是为了方便别人读代码。毕竟动态语言没有强制规定参数类型。 |
 | 10 simple2025 May 20, 2018 via Android dict 怎么注解想 ts 那样 |
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