Console progress bar -- takes stdin from arbitrary commands and plots a progress bar

console-progress.py

"""
SYNOPSIS: ./myprog | python console-progress.py

example for myprog: 

#!/bin/bash
echo 100
for i in $(seq 1 100)
do
   sleep 1
   echo $i
done
"""
import progressbar
import sys
end = sys.stdin.readline()
pbar = progressbar.ProgressBar(
	widgets=[progressbar.Percentage(), progressbar.Counter('%5d'), progressbar.Bar(), progressbar.ETA()], 
	maxval=float(end)).start()

while True:
	current = sys.stdin.readline()
	if current is None:
		break
	pbar.update(float(current))

pbar.finish()