Demo of python "progress bar"

progress.py

import time
import sys

total = int(sys.argv[1]) if len(sys.argv) > 1 else 100

def status_line(num, total):
	line = "> processed %d of %d files" % (num, total)
	sys.stdout.write(line)
	sys.stdout.flush()
	sys.stdout.write("\b" * (len(line)))

for num in xrange(total + 1):
	time.sleep(0.1) 
	status_line(num, total)

sys.stdout.write("\n")