Week 11, Friday: Classes

Quiz 5 today

finish the Clock class

Here are all of the methods you need to write to get the clock class to work:

• constructor: create Clock, given current time (H,M,S). Hint: create Counter objects for the hour, minutes, seconds
• __str__: create string with clock info in it
• getTime(): similar to str...just returns "hh:mm:ss"
• getters/setters: for current hour, minute, second values
• tick(): advance the clock by 1 second (and take care of rollovers)

digital clock

Once you have the clock class written, the digital-clock.py program should display a clock using Zelle graphics.

alarm clock

Suppose we want to turn this into an alarm clock, that flashes red when the alarm is going off. What do we need to add to the clock class to get this to work?

In particular, I would like to be able to do something like this to set the alarm:

digclock.setAlarm(h,m,s+10)

And then something like this to see if we are in the alarm "state" or not:

if digclock.inAlarm():
  gw.setBackground("red")