"Refreshing" Command Line in Windows

Question

I started learning python few days ago, I wrote an easy program. A user enters data and it gives information about the data.

while True:
 x = input("Enter Data: ")
        
 if x == z:
            print("")
          
           
 if x == y:
            print("") 
 if x == l:
            print("")
          
           
 if x == k:
            print("")

I am using program in windows command line. What I am trying to do is: when you "enter data" and program gives you information, you press enter and command line refresh and "enter data" appears again.

Oh, do you mean that it is constantly asking you to enter data? and you don't want it to? — bozdoz, Apr 26 '13 at 04:15
there is no problem with program, it is working(this is not a full code of program). I want command line to "refresh"(dunno if it's write term"). When i start program it says: Enter Data, i enter it, it gives me information. then it repeats "Enter Data", but under information it gave to me. i want it to delete everything and ask on the blank page to "Enter Data" — user2322274, Apr 26 '13 at 04:21

score 1 · Accepted Answer · edited May 23 '17 at 12:15

On Windows you can use cls to clear screen (see this question for details):

import os
import sys

while True:
    value = raw_input('Enter data: ')

    if value == 'quit':
        break

    print value

    # wait for enter key
    sys.stdin.read(1)
    os.system('cls')

Curses example:

import curses

w = curses.initscr()

while True:
    w.addstr("Enter data: ")
    value = w.getstr()

    if value == 'quit':
        break

    w.addstr('data: %s\n' % value)

    w.addstr('Press any key to continue')
    w.getch()
    w.clear()
    w.refresh()

curses.endwin()

score 0 · Answer 2 · answered Apr 26 '13 at 04:18

while True: means "keep doing this". So it's going to keep asking you to enter data. Maybe what you're looking for is to define a function instead: def ask(): instead, and then in the command line, type ask(), and it will prompt you only the one time, which is what I am guessing you want.

"Refreshing" Command Line in Windows

2 Answers2