Print a file/stdin to terminal character-by-character at a given speed

clower.py

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

import time
import sys

if len(sys.argv) < 3:
    sys.stderr.write("Need two arguments: file/- delay\n")
    sys.exit(-1)

if (sys.argv[1] == "-"):
    r = sys.stdin.read() 
else: 
    f=open(sys.argv[1], "r")
    r=f.read()
    
for b in r: 
    sys.stdout.write(b)
    sys.stdout.flush()
    time.sleep(float(sys.argv[2]))