Question

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.

Answer 1

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.