timer.py

# timer.py
##
## 2008-05-29 added line 67, time.sleep(0.001), to prevent
## 100% use of CPU

import time, winsound

def exit():
    print("Thank you for using Timer. Timer will now close")
    time.sleep(2.1) # to provide the user with enough time to read the message

def hms(seconds):
    """Convert seconds to tuple (hours, minutes, seconds)"""
    hours, minutes = 0, 0

    if 60 <= seconds < 3600:
        minutes, seconds = divmod(seconds,60)
    else:    # i.e., seconds >= 3600
        hours, seconds = divmod(seconds,3600)
        minutes, seconds = divmod(seconds,60)

    return hours, minutes, seconds # returns a tuple, e.g. (1, 40, 8.5)

def HMS2seconds():
    print("""
    enter times as h:m:s                 3:34:2
    If no seconds, h:m: is OK            11:34:
    If no minutes, h::s is OK            5::10
    If no hours, m:s is OK               4:23
    If no minutes or seconds, h:: is OK  3::
    If no hours or seconds, m: is OK     32:
    If no hours or minutes, s is OK      17
    """)
    while True:
        hr = 0
        minute = 0
        sec = 0
        while True:
            t = input("Enter hr:minute:sec ")
            if t == "":
                continue
            if t.count(":") == 0:
                try:
                    sec = int(t)
                except ValueError:
                    print("Incorrect entry; try again")
                    continue
                return sec
            elif t.count(":") == 1:
                try:
                    m, s = t.split(':')
                    if s == '':
                        s = '0'
                    minute, sec = int(m.strip()), int(s.strip())
                except ValueError:
                    print("Incorrect entry; try again")
                    continue
                return minute*60 + sec
            elif t.count(":") == 2:
                try:
                    h, m, s = t.split(':')
                    if m == '':
                        m = '0'
                    if s == '':
                        s = '0'
                    hr, minute, sec = int(h.strip()), int(m.strip()), int(s.strip())
                except ValueError:
                    print("Incorrect entry; try again")
                    continue
                return hr*3600 + minute*60 + sec
            else:
                print("Incorrect entry; try again")
                continue
def secsToHMS(seconds):
    """
    Convert seconds to hours:minutes:seconds, with seconds rounded to hundredths of a second.
    """
    minutes, seconds = divmod(seconds, 60)
    hours, minutes = divmod(minutes, 60)
    return "%02d:%02d:%02d" % (hours, minutes, seconds)

#hours = input("Enter the number of hours to time ")

#if hours == "":
    #h_seconds = 0
#else:
    #h_seconds = 3600 * int(hours)

#"""
#Alan Gauld's suggestion for getting h_seconds:
#h_seconds = (hours and 3600*int(hours)) or 0

#Works like this:
#Only evaluate 3600*hours if hours NOT ""
#If result is False(ie hours was "") then evaluate
#second part of OR - ie 0
#"""
#minutes = input("And the number of minutes ")
#m_seconds = (minutes and 60*int(minutes)) or 0 # see above

#seconds = input("And the number of seconds ")

#if seconds == "":
    #seconds = 0
seconds = HMS2seconds()

print("You have set the timer to",  hms(seconds))


#r = input("Enter number of seconds between reports ")
t0 = time.time()  # this gets time timing is started
#if r == "":
    #r = 10
#else:
    #r = int(r)

#print("Beep will sound after %d hours %d minutes %d seconds\n"  \
      #% hms(seconds))

# get report of time-passed and time-left every r seconds
k = r = 10
while True:
    time.sleep(0.001)
    t1 = time.time() # when break triggered this will be the time timing stopped
    seconds_passed = t1 - t0
    seconds_left = seconds - int(seconds_passed)

    if seconds_passed >= seconds:
        break

    if seconds_passed > k:
        p = hms(seconds_passed)
        l = hms(seconds_left)
        if p[0] == 0 and p[1] == 0:
            print("%d seconds have passed" % p[2])
        elif p[0] > 0 and p[1] > 0:
            print("%d hours %d minutes %d seconds have passed" \
              % hms(seconds_passed))
        elif p[0] == 0 and p[1] > 0:
            print("%d minutes %d seconds have passed" % (p[1], p[2]))
        else:
            print("%d hours %d seconds have passed" % (p[0], p[2]))

        if l[0] == 0 and l[1] == 0:
            print("%d seconds are left" % l[2])
        elif l[0] > 0 and l[1] > 0:
            print("%d hours %d minutes %d seconds are left" \
              % hms(seconds_left))
        elif l[0] == 0 and l[1] > 0:
            print("%d minutes %d seconds are left" % (l[1], l[2]))
        else:
            print("%d hours %d seconds are left" % (l[0], l[2]))
        time.sleep(0)
        print("\n")

        k += r

print("seconds elapsed:", (t1 - t0)) # as a check on accuracy; no formatting

print("%d hours %d minutes %d seconds have passed" \
              % hms(seconds))


print("TIME'S UP!")
#winsound.Beep(500,500) # Beep(frequency, duration in milliseconds) - only on Windows
winsound.PlaySound("/P31Working/Sounds/TaDa", winsound.SND_ALIAS)
exit()