Print messages just on one line. That is, old messages will be replaced by new ones one the same line.

oneline_print

#!/usr/bin/env python                                                          
# -*- coding: utf-8 -*-                                                        

import sys


def oneline_print(message):
    sys.stdout.write('\r%s' % message)
    sys.stdout.flush()


def oneline_end():
    sys.stdout.write('\n')
    
    
def progress():
    import time
    for i in range(0, 101):
        oneline_print('%s%%' % i)
        time.sleep(0.5)                                                        
    oneline_end()
    
    
if __name__ == '__main__':
    progress()