How can I remove last printed line in python?

Question

I'm trying to make countdown program with python. I want to turn that into it removes last printed line, so i can print new second.

import time

def countdown():
    minute = 60
    while minute >= 0:
        m, s = divmod(minute, 60)
        time_left = str(m).zfill(2) + ':' + str(s).zfill(2)
        print(time_left)
        time.sleep(1) 
        minute -= 1

countdown()

I am running python 2.7.13 on Raspberry Pi.

Answer 1

You could write directly to stdout , instead of using print. And the \\r character will go to the beginning of the line, not the next line.

 import time
 import sys

 def countdown():
     minute = 60
     while minute >= 0:
         m, s = divmod(minute, 60)
         time_left = str(m).zfill(2) + ':' + str(s).zfill(2)
         sys.stdout.write("%s\r" % time_left)
         sys.stdout.flush()
         time.sleep(1) 
         minute -= 1

Answer 2

Try the following (it's made in python2):

import time, sys

def countdown(totalTime):
    try:
        while totalTime >= 0:
            mins, secs = divmod(totalTime, 60)
            sys.stdout.write("\rWaiting for {:02d}:{:02d}  minutes...".format(mins, secs))
            sys.stdout.flush()
            time.sleep(1)
            totalTime -= 1
            if totalTime <= -1:
                print "\n"
                break
    except KeyboardInterrupt:
        exit("\n^C Detected!\nExiting...")

Call it like this: countdown( time ) For example: countdown(600) for 10 minutes.