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: "))
print "" * 20

控制台输出看起来像

input number: 10

我想在用户按下 ENTER 后删除文本 input number: 10.退格键  不行.

I'd like to delete the text input number: 10 after the user presses ENTER. The backspace key  can't do it.

推荐答案

这适用于大多数 unix 和 windows 终端......它使用非常简单的 ANSI 转义.

This will work in most unix and windows terminals ... it uses very simple ANSI escape.

num = int(raw_input("input number: "))
print "33[A                             33[A"    # ansi escape arrow up then overwrite the line

请注意，在 Windows 上，您可能需要使用以下命令启用 ANSI 支持http://www.windowsnetworking.com/kbase/windowstips/windows2000/usertips/miscellaneous/commandinterpreteransisupport.html

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

"33[A" 字符串被终端解释为将光标向上移动一行.

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

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