Python:如何不断重复程序直到获得特定输入? [英] Python: How to keep repeating a program until a specific input is obtained?

问题描述

我有一个评估输入的函数，我需要不断询问他们的输入并评估它，直到他们输入一个空行.我该如何设置?

I have a function that evaluates input, and I need to keep asking for their input and evaluating it until they enter a blank line. How can I set that up?

while input != '':
    evaluate input

我想过使用类似的东西，但它并没有完全奏效.有什么帮助吗?

I thought of using something like that, but it didn't exactly work. Any help?

推荐答案

有两种方法可以做到这一点.首先是这样的:

There are two ways to do this. First is like this:

while True:             # Loop continuously
    inp = raw_input()   # Get the input
    if inp == "":       # If it is a blank line...
        break           # ...break the loop

第二个是这样的:

inp = raw_input()       # Get the input
while inp != "":        # Loop until it is a blank line
    inp = raw_input()   # Get the input again

请注意，如果您使用的是 Python 3.x，则需要将 raw_input 替换为 input.

Note that if you are on Python 3.x, you will need to replace raw_input with input.

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