After reviewing this week's learning resources, complete the following for your coding practice lab activity. 

Textbook Exercises

 

Complete the Exercises in the textbook before moving onto the next assignment. 

Exercise 3-1: Enhance the Miles Per Gallon program

 

Using this Starter Code:

Links to an external site.

print("The Miles Per Gallon program\n")

# Create  loop to get user input for multiple trips
while True:
    # Get miles driven from the user
    miles_driven = float(input("Enter miles driven: "))

    # Get gallons of gas used from the user
    gallons_used = float(input("Enter gallons of gas used: "))

    # Get cost per gallon from the user
    cost_per_gallon = float(input("Enter cost per gallon: "))

    # Calculate the miles per gallon
    #-------Your Code Here----------

    # Calculate the total gas cost
    #-------Your Code Here----------

    # Calculate the cost per mile
    #-------Your Code Here----------

    # Print the result
    #-------Your Code Here----------

    # Ask the user if they want to enter another trip
    another_trip = input("\nGet entries for another trip (y/n)? ")
    if another_trip.lower() != "y":
        break

 

 

enhance the Miles Per Gallon program so it lets the user repeat the entries and get the miles per gallon for more than one trip. To do that, use a while loop.

Alternately, if you are using your local computer for development, open the test_scores.py file in the following folder: murach_python > exercises > ch03 > mpg.py from the downloaded textbook files.
 

For an example of a y/n while loop see main.pyDownload main.py(Links to an external site.)

Modify the program so it gets the cost of a gallon of gas as another entry from the user, and validate this entry before using it in your calculations. If all three entries are valid, calculate the total gas cost and the cost per mile, and display the results on the screen. 

Example output:  (Bold fonts are the user input fields)

The Miles Per Gallon program

Enter miles driven: 150
Enter gallons of gas used: 15.2
Enter cost per gallon: 4.25

Miles Per Gallon: 9.87
Total Gas Cost: 64.6
Cost Per Mile 0.4

Get entries for another trip (y/n)? y

Enter miles driven: 225
Enter gallons of gas used: 16
Enter cost per gallon: 4.25

Miles Per Gallon: 14.06
Total Gas Cost: 68.0
Cost Per Mile 0.3

Get entries for another trip (y/n)? n
Exercise 3-2: Enhance the Test Scores program

 

Using this starter Code:

print("The Test Scores program\n")
print("Enter test scores")
print("Enter 'end' to end input")
print("===============================")

# Outer loop to manage multiple sets of scores
while True:
    total_score = 0
    count = 0

    # Inner loop to input scores for a single set
    while True:
        score_input = input("Enter test score: ")

        # Check if input is "end"
        if score_input.lower() == "end":
            break

        # Convert input to integer for processing
        # ---- Your code here ----------

        # Validate the input score
        if 0 <= score <= 100:
            # ---- Your code here ----------
        else:
            # ---- Your code here ----------
    # Calculate the average score
    # ---- Your code here ----------

    # Ask the user if they want to enter another set of scores
    another_set = input("Enter another set of test scores (y/n)? ")
    if another_set.lower() != "y":
        break
    else:
        print("\nEnter test scores")
        print("Enter 'end' to end input")
        print("===============================")

enhance the Test Scores program so it lets the user input multiple sets of scores. To do that, use a nested while loop.

Alternately, if you are using your local computer for development, open the test_scores.py file in the following folder: murach_python > exercises > ch03 > test_scores.py from the downloaded textbook files.

Modify the program so that when the user enters "end" it ends the set of score entries and outputs the Total and Average Score for the set that was just finished. Then ask if there is another set of test scores to enter. Be sure to keep the validation for the number input to be between 0 and 100.

 

Hint for Exercise 3-2

 

• recall that by default input() comes over as a string variable
• check FIRST if the input() equals END with an IF statement
• ELSE change the variable to an int() and evaluate from there

Example output:  (Bold fonts are the user input fields)

The Test Scores program

Enter test scores
Enter 'end' to end input
===============================
Enter test score: 75
Enter test score: 85
Enter test score: 95
Enter test score: end
===============================
Total Score: 255
Average Score: 85Enter another set of test scores (y/n)? y

Enter test scores
Enter 'end' to end input
===============================
Enter test score: 95
Enter test score: -85
Test score must be from 0 through 100. Try again.
Enter test score: 85
Enter test score: 60
Enter test score: end
===============================
Total Score: 240
Average Score: 80

Enter another set of test scores (y/n)? n


To Submit Your Programs:

 

Submit the .py files when you are done.

Rubric

 

 

Lab Activity 3

 

Criteria

Ratings

Pts

This criterion is linked to a Learning OutcomeProper Code Syntax, Format and Supported with Comments

 

2 pts Accomplished

1.5 pts Proficient

0.5 pts Novice

0 pts No Marks

2 pts
 

This criterion is linked to a Learning OutcomeCreated working program 1 meeting the assignment instructions, free from errors

 

4 pts Accomplished - great work! Code looks and works well.

3 pts Proficient - code mostly works but can be improved upon.

2.5 pts Novice - need to apply better coding techniques and commit more time to practice

0 pts No submission

4 pts
 

This criterion is linked to a Learning OutcomeCreated working program 2 meeting the assignment instructions, free from errors

 

4 pts Accomplished - great work! Code looks and works well.

3 pts Proficient - code mostly works but can be improved upon.

2.5 pts Novice - need to apply better coding techniques and commit more time to practice

0 pts No submission

4 pts
 

Total Points: 10

 

PreviousNext