• Accept user input through varied menu options
• Validate user input through exception handling
• Process data according to specifications
• Design control flow logic using data comparisons
• Develop and implement user-defined classes
• Print formatted output according to given specifications

Computer vision and the related data processing allows cars to detect obstacles in their path. You are being asked to design a terminal-based application for determining a course of action depending on detected obstacles. Your application must meet the following design specifications:

• Your user interface should prompt the user to input the following information:
  • Select 1 to update the detected traffic light colour, 2 to update whether a pedestrian is detected, 3 to update whether a vehicle is detected, 0 to end the program
  • If menu option 1, 2 or 3 are detected, the user should then be prompted to specify the detected change
    • A traffic light can be "green", "yellow", or "red"
    • Pedestrian status can be "yes" or "no"
    • Vehicle status can be "yes" or "no"
  • A course of action message should be printed following the status change
    • Any scenario where a red light, a pedestrian or a vehicle are detected should display the message "STOP"
    • A green light with no pedestrian or vehicle detected should display the message "Proceed"
    • A yellow light with no pedestrian or vehicle detected should display the message "Caution"
  • After the action message, the current status of each monitored condition should be printed
• Your input interface design should follow the provided screenshot example.
• You must validate that the provided input is correct (both menu input and status input).
• If the menu option input does not meet the criteria, you must handle a ValueError exception by providing a message back to the user and allow them to re-enter their choice without terminating the program.
• All status input must match the given values exactly (e.g. "red" not "Red").
  • While you should check that the values are valid, you do not need to handle errors/exceptions for these values
• The initial default values are a green traffic light, no pedestrian and no vehicle.
• Your code should include and use the provided Sensor class and the provided user-defined functions. Provided code should remain unchanged unless otherwise specified. Details are provided in the template comments.
• You may not use any global variables. However, you may create your Sensor object in main.
• Your code must follow the conventions discussed so far in the course (names_with_underscores, ClassNames, four spaces for indentations, spaces between variables/operators, comments throughout, etc.)
• All user-defined functions must be properly commented above the function header.
• Your code will be run by the TAs as your end user.
• FAQs about the assignment will be answered on the D2L discussion boards. Please check the boards for any clarifications before submitting.
• The grading rubric will be posted to D2L.

• Make sure to watch video lessons 1 - 14 and review the corresponding Jupyter Notebooks and lab sessions.
• Clone this repository to your local computer.
• Open VSCode and start a new terminal. Make sure that your ensf592 environment is activated.
• input_processing.py is provided as a starting point. Fill in the header with your own information.
• Remember to test your program execution via the terminal: python input_processing.py
• Take a screenshot of your successful program run and upload it to your assignment repository.
• Commit your screenshot and code.
• Push your local git history to github
• Submit your repository HTTPS link to the Assignment 2 D2L dropbox.
• Tip: If you want to learn more about a specific aspect of a Python object, remember to take a look at the official documentation!