Lightweight Python Stopwatch

stopwatch.py

import time
from sys import stdout

try:
    start = time.time()
    while True:
        s = time.time() - start
        d = int(s / 86400)
        s -= d * 86400
        h = int(s / 3600)
        s -= h * 3600
        m = int(s / 60)
        s -= m * 60
        stdout.write("\r%dd %02d:%02d:%05.2f" % (d, h, m, s))
        stdout.flush()
        time.sleep(0.01)
except:
    stdout.write("\r\n")