删除Python中的最后一个输入行 [英] Delete the last input row in Python

问题描述

我有以下代码：

  num = int（raw_input（input number：））
打印\b* 20 
  

控制台输出如

 输入数字：10 
  

'd喜欢在用户按 ENTER 后删除文本输入数字：10 。退格键 \b 无法做到。

解决方案

这将工作在大多数unix和windows终端...它使用非常简单的ANSI转义。

  num = int（raw_input输入数字：））
 print\033 [A \033 [A＃ansi escape箭头，然后覆盖行
   
 
请注意，在Windows上，您可能需要通过以下方式启用ANSI支持：
  http://www.windowsnetworking.com/kbase/windowstips/windows2000/usertips/miscellaneous/commandinterpreteransisupport.html  
 
 
 
\033 [A字符串被终端解释为将光标向上移动一行。
 
I have the following code:
num = int(raw_input("input number: "))
print "\b" * 20
The console output looks like
input number: 10
I'd like to delete the text input number: 10 after the user presses ENTER. The backspace key \b can't do it.
解决方案
This will work in most unix and windows terminals ... it uses very simple ANSI escape.
num = int(raw_input("input number: "))
print "\033[A                             \033[A"    # ansi escape arrow up then overwrite the line
Please note that on Windows you may need to enable the ANSI support using the following
http://www.windowsnetworking.com/kbase/windowstips/windows2000/usertips/miscellaneous/commandinterpreteransisupport.html

"\033[A" string is interpreted by terminal as move the cursor one line up.

                        
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