如何连续两次或更多次调用一个函数? [英] How do I call a function twice or more times consecutively?

问题描述

是否有一种简短的方法可以在Python中连续两次或更多次调用一个函数?例如:

Is there a short way to call a function twice or more consecutively in Python? For example:

do()
do()
do()

可能像这样:

3*do()

推荐答案

我会:

for _ in range(3):
    do()

_是变量的约定，该变量的值无关紧要.

The _ is convention for a variable whose value you don't care about.

您可能还会看到有人写:

You might also see some people write:

[do() for _ in range(3)]

但是

稍微贵一点，因为它会创建一个包含do()每次调用的返回值的列表(即使它是None)，然后丢弃结果列表.除非您正在使用返回值列表，否则我不建议您使用此方法.

however that is slightly more expensive because it creates a list containing the return values of each invocation of do() (even if it's None), and then throws away the resulting list. I wouldn't suggest using this unless you are using the list of return values.

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