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Define the functions in Python 3.8

1. Write a function most frequent n that takes a list of strings and an integer n, and that returns a dictionary where the ke

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Answer #1 
import operator
import statistics

def most_frequent_n(text, n):
    # sorting the dictionary and store into sorted_text
    sorted_text = sorted(text.items(), key=operator.itemgetter(1), reverse=True)

    new_text = {}
    i=1
    # iterate over the sorted_text
    for k, v in sorted_text:
        # store key, value pair to the new_text dictionary
        new_text[k] = v

        # if i == n break the for loop
        # because we need only n values
        if i == n:
            break

        i = i + 1

    return new_text

    
def average_scores(gradebook):
    avg_grade = {}
    
    # iterate over gradebook
    for k, v in gradebook.items():

        # calculate average of marks and 
        # store name and average to the dictionary, avg_grade
        avg_grade[k] = statistics.mean(v)

    # returning avg_grade dictionary
    return avg_grade


def num_name(num):
    # dictionary for ones digit
    ones = {0: "zero",1:"one", 2: "two", 3: "three", 4: "four", 5: "five", 6: "six", 7: "seven", 8: "eight", 9: "nine"}

    # dictionary for tens digit
    tens = { 2: "twenty", 3: "thirty", 4: "forty", 5: "fifty", 6: "sixty", 7: "seventy", 8: "eighty", 9: "ninety"}

    # dictionary for special numbers from 10-19
    special = {10: "ten", 11:"eleven", 12: "twelve", 13: "thirteen", 14: "fourteen", 
                15: "fifteen", 16: "sixteen", 17: "seventeen", 18: "eighteen", 19: "nineteen"}

    # check if num<10 then return value from ones dictionary
    if num<10:
        return ones[num]

    # check if num < 10 then return value from special dictionary
    elif num < 20:
        return special[num]
    else:
        # extract ones digit
        ones_digit = int(str(num)[1])

        # extract tens digit
        tens_digit = int(str(num)[0])

        # return the number in words 
        return tens[tens_digit] + " " + ones[ones_digit]


text = {"is":2, "the":3, "of":2, "am":1, "a":1}

# calling most_frequent_n method
print(most_frequent_n(text, 3))
print(most_frequent_n(text, 2))
print()

gradebook = {"thomas": [83, 73, 82, 93],
            "Maria": [78, 82, 85, 89],
            "Philip": [65, 72, 78, 71],
            "Sally": [96, 93, 99, 86]}

# calling average_scores method
print(average_scores(gradebook))
print()

# calling num_name method
print(num_name(7))
print(num_name(58))
print(num_name(12))

Screenshots of running code and output:
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