Question

Using a Python environment of your choice –

1. Create the following three dictionaries: Gary, Alice, and Tyler

Gary = {

"name": "Gary",

"homework": [90.0,97.0,75.0,92.0],

"quizzes": [88.0,40.0,94.0],

"tests": [75.0,90.0]

}

Alice = {

"name": "Alice",

"homework": [100.0, 92.0, 98.0, 100.0],

"quizzes": [82.0, 83.0, 91.0],

"tests": [89.0, 97.0]

}

Tyler = {

"name": "Tyler",

"homework": [0.0, 87.0, 75.0, 22.0],

"quizzes": [0.0, 75.0, 78.0],

"tests": [100.0, 100.0]

}

• Insert one additional (new) dictionary of your choice
• Create a new list named students that contains four dictionary items
• for each student in your students list, print out that student's data, as follows:
  • print the student's name
  • print the student's homework
  • print the student's quizzes
  • print the student's tests
• Write a function average that takes a list of numbers and returns the average
  • Define a function called average that has one argument, numbers
  • Inside that function, call the built-in sum() function with the numbers list as a parameter. Store the result in a variable called total
  • Use float() to convert total and store the result in total
  • Divide total by the length of the numbers list. Use the built-in len() function to calculate that
  • Return that result
• Write a function called get_average that takes a student dictionary (like lloyd, alice, or tyler) as input and returns his/her weighted average.
  • Define a function called get_average that takes one argument called student.
  • Make a variable homework that stores the average() of student["homework"].
  • Repeat step 2 for "quizzes" and "tests".
  • Multiply the 3 averages by their weights and return the sum of those three. Homework is 10%, quizzes are 30% and tests are 60%.
• Define a function called get_class_average that has one argument, students. You can expect students to be a list containing your three students.
  • First, make an empty list called results.
  • For each student item in the class list, calculate get_average(student) and then call results.append() with that result.
  • Finally, return the result of calling average() with results.
• Finally, print out the result of calling get_class_average with the students list.

Answer 1

Thanks for the question.

Here is the completed code for this problem. Comments are included, go through it, learn how things work and let me know if you have any doubts or if you need anything to change. 

If you are satisfied with the solution, please rate the answer. 
Thanks!

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# Write a function average that takes a list of numbers and returns the ave
def average(lst):
    return float(sum(lst)) / len(lst)


# Write a function called get_average that takes a student dictionary
def get_average(dict):
    homework_average = average(dict['homework'])
    quizzes_average = average(dict['quizzes'])
    test_average = average(dict['tests'])
    return 0.1 * homework_average + 0.3 * quizzes_average + 0.6 * test_average


# Define a function called get_class_average that has one argument, students.
# You can expect students to be a list containing your three students.
def get_class_average(students_list):
    # First, make an empty list called results.
    results = []
    for student in student_list:
        results.append(get_average(student))
    return average(results)


Gary = {"name": "Gary", "homework": [90.0, 97.0, 75.0, 92.0], "quizzes": [88.0, 40.0, 94.0], "tests": [75.0, 90.0]}
Alice = {"name": "Alice", "homework": [100.0, 92.0, 98.0, 100.0], "quizzes": [82.0, 83.0, 91.0], "tests": [89.0, 97.0]}
Tyler = {"name": "Tyler", "homework": [0.0, 87.0, 75.0, 22.0], "quizzes": [0.0, 75.0, 78.0], "tests": [100.0, 100.0]}
# Insert one additional (new) dictionary of your choice
Marsha = {"name": "Marsha", "homework": [90.0, 77.0, 68.0, 72.0], "quizzes": [6.0, 69.0, 74.0], "tests": [78.0, 80.0]}
# Create a new list named students that contains four dictionary items
student_list = [Gary, Alice, Tyler, Marsha]
# for each student in your students list, print out that student's data, as follows
for student in student_list:
    print('Student Name: {}'.format(student['name']))
    print('Homework Scores: {}'.format(' '.join([str(score) for score in student['homework']])))
    print('Quizzes Scores: {}'.format(' '.join([str(score) for score in student['quizzes']])))
    print('Test Scores: {}\n'.format(' '.join([str(score) for score in student['tests']])))

# Finally, print out the result of calling get_class_average with the students list.
print('Class Average: {:.2f}'.format(get_class_average(student_list)))

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