As part of this assignment, the program that you will be writing will store current grades in a dictionary using course codes as keys and with values consisting of percent grades in lists. The main functions of this program are to print a student's gradebook, to drop the lowest grade in each course, print the student's gradebook again, drop the course with lowest average, and finally printing the student's gradebook again.

This program requires a main function and a custom value-returning function.

In the main function, code these basic steps in this sequence (intermediate steps may be missing):

start with an empty dictionary that represents a gradebook and then use a while loop to allow the input of course codes from the keyboard. End the while loop when the user presses enter without entering data.

within the while loop:

for each course entered, use a list comprehension to generate five random integers in the range of 70 through 100. These random integers in a list represent the grades for the course.

after entering the courses, call a custom function passing to it the dictionary now populated with course information and associated grade information

In the custom function:

first print the underlined headings for Course, Average Grade and Grades columns. See the example output for proper formatting (hint: use an 8-character width, left justified for "Course"; use 5-character width, centered, for "Avg"; and use 25-character width for "Grades")

use a for loop and the items method to extract the course and grade data from gradebook.

within the for loop:

use a built-in method to sort the list of grades

use another for loop to sum all grades for the course

calculate the average for the course using the sum of all grades and a built-in function to determine the number of grades in the list of grades

use an if statement to determine the course with the lowest average (hint: this may require initializing the variable used to store the lowest average to the highest possible grade value prior to the for loop).

print the course and its average. Use format identifiers to allow for printing of a left-justified course with a width of 8 and for an average with a width of 4 including 1 decimal place.

use another for loop to print all grades in the grades list for the course. Use a format identifier to allow for printing of a right-justified grade with a width of 4 followed by a percent sign.

calculate and print the term average using the previously calculated sum of all grades and built-in functions to determine the number items in the gradebook dictionary and grade list. Use a format identifier to allow for printing of a grade with a width of 4 including one decimal position followed by a percent sign.

return the course with the lowest average

Back in main function:

print a message indicating that the lowest grades are being dropped. See the example output for proper formatting.

use a for loop and the values method of the gradebook to extract the grades list for each course

within the for loop

use a built-in function to determine the lowest grade from the grades list for a particular course

use a built-in function to remove the lowest grade

print a message indicating that courses and grades are being printed after the lowest grades have been dropped. See the example output for proper formatting.

call the custom function again passing to it the updated dictionary now populated with course information and associated grade information with the lowest grades for each course dropped

drop the lowest course, which is returned by the custom function, from the gradebook. Use a built-in function to drop the course.

print a message indicating that courses and grades are being printed after the lowest course has been dropped. See the example output for proper formatting.

call the custom function again passing to it the updated dictionary now populated with course information and associated grade information with the lowest course dropped

For your testing purposes, enter at least five courses although any amount should be allowed to be entered

Printed output and messages should be formatted as in the example outputs.

Example Output