⌚ Multiple Inheritance in Python: The Rolex GMT Master

# You must make sure to run all cells in sequence using shift + enter or you might encounter errors
from pykubegrader.initialize import initialize_assignment

responses = initialize_assignment("16_GMT_q", "week_7", "readings", assignment_points = 20.0, assignment_tag = 'week7-readings')

# Initialize Otter
import otter
grader = otter.Notebook("16_GMT_q.ipynb")

⌚ Multiple Inheritance in Python: The Rolex GMT Master#

The Rolex GMT-Master is one of the most iconic watches ever created, designed for pilots and travelers who needed to track multiple time zones. The watch combines precise movement, durability, and aesthetic elegance.

Similarly, in Python, multiple inheritance allows a class to combine features from multiple parent classes, just like the GMT-Master blends aviation functionality with luxury craftsmanship.

Let’s explore how multiple inheritance enables us to design complex and versatile class structures—just like Rolex engineers do when crafting legendary watches.

# Run this block of code by pressing Shift + Enter to display the question
from questions._16_GMT_q import Question1
Question1().show()

# Run this block of code by pressing Shift + Enter to display the question
from questions._16_GMT_q import Question2
Question2().show()

# Run this block of code by pressing Shift + Enter to display the question
from questions._16_GMT_q import Question3
Question3().show()

Question 1 (Points: 12.0): ⌚ Free Response: Implement Multiple Inheritance for a Rolex GMT Watch#

Design a Python class structure that models a Rolex GMT-Master watch using multiple inheritance:

  • Create a base class Timekeeping with:

    • A method show_time() that returns "Showing local time."

  • Create another base class GMTFunctionality with:

    • A method show_gmt() that returns "Showing GMT time."

  • Create a subclass RolexGMT that:

    • Inherits from both Timekeeping and GMTFunctionality.

    • Overrides show_time() to include both local and GMT time.

Example Usage#

watch = RolexGMT()
print(watch.show_time())
print(watch.show_gmt())

Expected Output:

Local Time: Showing local time.
GMT Time: Showing GMT time.

...

# Example usage
watch = RolexGMT()
print(watch.show_time())
print(watch.show_gmt())

grader.check("Rolex-GMT-Multiple-Inheritance")

Submitting Assignment#

Please run the following block of code using shift + enter to submit your assignment, you should see your score.

from pykubegrader.submit.submit_assignment import submit_assignment

submit_assignment("week7-readings", "16_GMT_q")