分享程序员开发的那些事...
更新时间：2022-12-07 18:02:10
两件事:
您必须以某种方式使用Python2.x. 功能注释仅在Python 3.x中受支持.如果尝试在Python 2.x中使用它们，则会得到SyntaxError:
You must be using Python 2.x somehow. Function annotations are only supported in Python 3.x. If you try to use them in Python 2.x, you will get a SyntaxError:
>>> def f() -> int:
File "<stdin>", line 1
def f() -> int:
^
SyntaxError: invalid syntax
>>>
如果未定义number(我相信是)，则需要将其设置为字符串，以免得到NameError.下面是一个演示:
If number is undefined (which I believe it is), then you need to make it a string so that you don't get a NameError. Below is a demonstration:
>>> def square_root(x:number, eps:number) -> float:
... pass
...
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'number' is not defined
>>>
>>> def square_root(x:'number', eps:'number') -> float:
... pass
...
>>>