Exiting while loop by pressing enter without blocking. How can I improve this method?

Question

So I\'ve been doing a little bit of reading up on how to exit a while loop by the user pressing the enter key and I\'ve come up with the following:

import sy         


        

Answer 1

This worked for me:

import sys, select, os

i = 0
while True:
    os.system('cls' if os.name == 'nt' else 'clear')
    print "I'm doing stuff. Press Enter to stop me!"
    print i
    if sys.stdin in select.select([sys.stdin], [], [], 0)[0]:
        line = raw_input()
        break
    i += 1

You only need to check for the stdin being input once (since the first input will terminate the loop). If the conditions line/not line have result for you, you can combine them to one if statement. Then, with only one while statement being used, you can now use break instead of setting a flag.