Could someone pls help me with these two functions in python?

Function name: find_avg

Parameters: file_name (str), student_name (str)

Return value: student_avg (float)

Description: Read in a file (that has the same format shown above). Find the student specified by the

parameter. Generate the average of all the students score and return the average. If the student has

a DNT, disregard that score (do not use that to compute the average). Round the answer to 2

decimal places. Assume not two students have the same name and every student will have at least

one valid test. If the name of the student passed in is not in the file, return 0. Assume the passed in

filename is a valid file.

Test Cases:

>>> find_avg("scores1.txt", "Iron Man") 95.44 >>> test1 = find_avg("scores1.txt", "Iron Man") >>> print(test1) 95.44 >>> test2 = find_avg("scores2.txt", "Wonder Woman") >>> print(test2) 97.86

>>> test3 = find_avg("scores1.txt", "Superman")

>>> print(test3) 0.0

Function name: make_roster

Parameters: students (str), filename (str)

Return value: None

Description: Take in a string of students. The format of the students will be First Last, First Last,

First Last. Write the names of the students to the file specified by the parameter. Write each line in

the format Last, First. Each student should be in a different line, and the students should be sorted

alphabetical by last name. Make sure there is no newline character after the last student

Test Cases:

>>> make_roster("Caroline Kish, David Wang, First Last", "out1.txt")

Kish, Caroline

Last, First

Wang, David

>>> make_roster("Rodrigo Mejia, Daniel Marcos, Daniel Barrundia", "out2.txt")

Barrundia, Daniel

Marcos, Daniel

Mejia, Rodrigo