simple pomodoro implementation with pynotify

pymodoro.py

import pynotify
from time import sleep

def mins_to_secs(ms):
    return map(lambda x: x * 60, ms)

class Pymodoro(object):

    POMODORO_TIME = 25 * 60
    POMODORO_CHECKPOINTS = mins_to_secs([25, 15, 10, 5, 3, 1]) + range(10)

    REST_TIME = 5 * 60
    REST_CHECKPOINTS = mins_to_secs([5, 3, 1]) + range(30)

    LONG_REST_TIME = 15 * 60
    LONG_REST_CHECKPOINTS = mins_to_secs([15, 10, 5, 3, 1]) + range(30)

    def __init__(self):
        self.n = pynotify.Notification('Pymodoro')

    def go(self):
        while True:
            self.cycle('Pomodoro (1/4)', self.POMODORO_TIME, self.POMODORO_CHECKPOINTS)
            self.cycle('Rest', self.REST_TIME, self.REST_CHECKPOINTS)

            self.cycle('Pomodoro (2/4)', self.POMODORO_TIME, self.POMODORO_CHECKPOINTS)
            self.cycle('Rest', self.REST_TIME, self.REST_CHECKPOINTS)

            self.cycle('Pomodoro (3/4)', self.POMODORO_TIME, self.POMODORO_CHECKPOINTS)
            self.cycle('Rest', self.REST_TIME, self.REST_CHECKPOINTS)

            self.cycle('Pomodoro (4/4)', self.POMODORO_TIME, self.POMODORO_CHECKPOINTS)
            self.cycle('Long Rest', self.LONG_REST_TIME, self.LONG_REST_CHECKPOINTS)

    def update(self, title, msg, timeout=pynotify.EXPIRES_DEFAULT):
        self.n.update(title, msg)
        self.n.set_timeout(timeout * 1000)
        self.n.show()

    def cycle(self, title, how_much, hot_seconds):
        while how_much:
            if how_much in hot_seconds:
                if how_much >= 60:
                    self.update(title, 'You have {0} minutes left.'.format(how_much / 60))
                else:
                    self.update(title, 'You have {0} seconds left.'.format(how_much), timeout=0)

            sleep(1)
            how_much -= 1


def main():
    pynotify.init("Pymodoro")
    pymodoro = Pymodoro()
    pymodoro.go()

if __name__ == '__main__':
    main()