Format seconds to human readable format

format_time.py

import time

def format_time(time):
    m, s = divmod(time, 60)
    h, m = divmod(m, 60)
    d, h = divmod(h, 24)
    # could be extended here to weeks, months, years, ...
    # but the exact calculation of months, weeks and years is a little bit
    # more difficult... so we leave it as it is.
    
    out = []
    fmt = lambda x: (x, "" if x == 1 else "s")
    if d > 0:
        out.append("%d day%s" % fmt(d))
    if h > 0:
        out.append("%d hour%s" % fmt(h))
    if m > 0:
        out.append("%d minute%s" % fmt(m))
    if s > 0:
        out.append("%d second%s" % fmt(s))
    
    return " ".join(out)
    

print(format_time(time.time()))
# should print something like
# '16443 days 12 hours 52 minutes 49 seconds'