• Due
• What You Need to Do
• Setup On Your Machine
• Specification
• Test Code
• Output
• Suggestions
• Testing on Your Machine
• Copy the Script to Unix
• Testing the Script on Unix (Optional)

Due

Sunday, April 6th at 11:59 PM

What You Need to Do

• Create the script hw8.py
• Make sure it obeys the rules in Rules for Homework Scripts
• Make sure the script has a hashbang line and is executable
• Move it to an an hw8 directory on pe15.cs.umb.edu

Setup On Your Machine

• Open a text editor.
  I would suggest the text editor built into the program IDLE.
• Save the file as hw8.py

Specification

• Define the class Car that has the following attributes
  • make
  • model
  • year
• The class must have the following 4 methods in addition to the constuctor
  • get_make(self)
  • get_model(self)
  • get_year(self)
  • print_car(self)
• The methods with names beginning with "get_" are accesors that return the value of their attribute
• print_car prints a string representing a Car object
• The string should contain the make, model and year

Test Code

• Your script must contain the following statements
• They should appear at the bottom of your script

  car = Car("Honda", "CRV", "1997")
  print(car.get_make())
  print(car.get_model())
  print(car.get_year())
  car.print_car()

Output

• The output should look something like this

  Honda
  CRV
  1997
  Honda, CRV, 1997

Suggestions

• Write this script in stages
• Test your script at each step
• Print the steps below
• And check them off as you finish each one

1. Add a header for the class Car to the script.
   Create the method header for the constructor __init__ with parameters self, make, model and year.
   For the body of this function, use a pass statement.
   Run the script and fix any errors you find.
2. Copy the test code to the bottom of the script.
   Comment out all but the first line.
   Add assignment statements to the script for the attributes make, model and year.
   Run the script and fix any errors you find.
3. Create the accesor method get_make that returns the value of make.
   Remove the # from the next line in the test code.
   Run the script and fix any errors you find.
4. Create the accesor method get_model that returns the value of model.
   Remove the # from the next line in the test code.
   Run the script and fix any errors you find.
5. Create the accesor method get_year that returns the value of year.
   Remove the # from the next line in the test code.
   Run the script and fix any errors you find.
6. Create print_car that prints all the attributes with a comma after the first two values.
   Remove the # from the last line in the test code.
   Run the script and fix any errors you find.

Testing on Your Machine

• Open IDLE
• Use the Open command in IDLE to open hw8.py
• Under the Run menu, select Run Module
• Your output should look something like this

  Honda
  CRV
  1997
  Honda, CRV, 1997

Copy the Script to Unix

• Open FileZilla and connect to pe15.cs.umb.edu
• Go to your it117 directory
• Go to your hw directory
• Right-click in the whitespace inside the hw directory
• Enter hw8 in the dialog box
• Click and drag your script from the bottom left panel to the bottom right panel
• Right-click on the file and select "Permissions" from the menu
• Enter 755 in the box provided
• This will make the script executable

Testing the Script on Unix (Optional)

• Connect to pe15.cs.umb.edu using an ssh client like putty.exe (Windows) or ssh (Mac)
• Go to the directory for this exercise

  cd  it117/hw/hw8

• Run this script

  python3 hw8.py

• You should see something like this

  Honda
  CRV
  1997
  Honda, CRV, 1997

Copyright © 2022 Glenn Hoffman. All rights reserved. May not be reproduced without permission.