Python：如何继续重复一个程序，直到获得一个特定的输入？ [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，我需要不断的询问他们的输入并评估它，直到输入一个空行。

  while input！=''：
评估输入
 
 code> 

我曾经想过使用类似的东西，但是并不完全正确。任何帮助？

解决方案

有两种方法可以做到这一点。首先是这样的：



  while True：＃循环连续
 inp = raw_input（）＃获取输入
 if if ==：＃如果是空行... 
 break＃...打破循环
  

第二个是这样的：

$ p $ inp = raw_input（）＃获取输入
while inp！=：＃循环到空行
inp = raw_input（）＃再次获取输入


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

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

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

解决方案

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

The second is like this:

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

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

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