IO-time

# -*- coding: utf8 -*-

from time import time
from sys import argv

open_us = read_us = close_us = 0

for file in argv[1:]:
    start = time()
    with open(file) as f:
        opened = time()
        _ = f.read(4096)
        read = time()
    end = time()

    this_open_us = (opened - start) * 1000000
    this_read_us = (read - opened) * 1000000
    this_close_us = (read - opened) * 1000000
    print "%s: %dµs + %dus + %dµs" % (file, this_open_us, this_read_us, this_close_us)

    open_us += this_open_us
    read_us += this_read_us
    close_us += this_close_us

count = len(argv) - 1
open_us /= count
close_us /= count

print "Avg Latency: %dµs + %dµs + %dµs = %dµs" % (open_us, this_read_us, close_us, open_us + read_us + close_us)