16.1: Time
- Page ID
- 40822
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As another example of a programmer-defined type, we’ll define a class called Time that records the time of day. The class definition looks like this:
class Time:
"""Represents the time of day.
attributes: hour, minute, second
"""
We can create a new Time object and assign attributes for hours, minutes, and seconds:
time = Time() time.hour = 11 time.minute = 59 time.second = 30
The state diagram for the Time object looks like Figure \(\PageIndex{1}\).
As an exercise, write a function called print_time that takes a Time object and prints it in the form hour:minute:second. Hint: the format sequence '%.2d' prints an integer using at least two digits, including a leading zero if necessary.
Write a boolean function called is_after that takes two Time objects, t1 and t2, and returns True if t1 follows t2 chronologically and False otherwise. Challenge: don’t use an if statement.
