How do I update my summary function to include a count of A, B, 100, 0s

this is my current code:

#globals

students = {} #stores complete information about each student in a dictionary

#key: name value: [score, grade_basis, grade] score = value[0] grade_basis = value[1] grade = value[2]

#functions

def is_valid_graded(grade_basis): #validation bool

return grade_basis == 1 or grade_basis == 0

def is_valid_score(score): #in range 0...100 validation bool

return score >=0 and score

def compute_grade(score): #computes grades based on score and return grade

if score > 80:

grade = 'A'

else:

grade = 'B'

return grade

def compute_passfail(score,grade_basis):

if grade_basis == 1:

return compute_grade(score)

if score >=40:

grade = "Pass"

else:

grade = "Fail"

return grade

def submit():

global students

line = input('Enter name, score and grade basis (1 or 0)>>')

in_list = line.split()

name = in_list[0]

score = float(in_list[1])

if not is_valid_score(score): #validating score here

print('Error! Score must be positive')

return

print(score)

grade_basis = int(in_list[2])

if not is_valid_graded(grade_basis):

print('Error! Grade basis is defined by entering 0 or 1') #validating grade basis here

return

print(grade_basis)

grade = compute_passfail(score,grade_basis)

students[name] = [score,grade_basis,grade] #inserting record into dictionary

print(name,score,grade_basis,grade)

def compute_average_score():

global students

total_score = 0.0

num_inputs = 0

grade_basis_count = 0

for value in students.values():

score = value[0]

grade_basis = value[1]

grade = value[2]

total_score = total_score + score

num_inputs = num_inputs + 1

if grade_basis:

grade_basis_count = grade_basis_count + 1

if num_inputs > 0:

avg = total_score / num_inputs

else:

avg = None

return avg, num_inputs,grade_basis_count

def summary():

global students

average_score, num_inputs,grade_basis_count = compute_average_score()

if average_score is not None:

print(f'Average Score: {average_score:.2f}\tNumber of Inputs: {num_inputs:d}\tGrade Basis Count: {grade_basis_count:d}')

else:

print('No Data!')

def clear_data():

global students

students.clear()

def reset():

clear_data()

def display():

global students

if students:

for key in students.keys():

value = students[key]

score = value[0]

grade_basis = value[1]

grade = value[2]

print(f'{key:12}|{score:12}|{grade_basis:14}|{grade:12}|')

else:

print('No data!')

def search():

global students

key = input('Enter a name to search for?>>')

if key in students.keys():

value = students[key]

score = value[0]

grade_basis = value[1]

grade = value[2]

print(f'{key:12}|{score:12}|{grade_basis:14}|{grade:12}|')

else:

print('No Key Found!')

#main

quit = False

while not quit:

print('1.Submit 2.Summary 3.Reset 4.Display 5.Search 6.Exit')

choice = int(input('Enter choice: '))

if choice == 1:

submit()

elif choice == 2:

summary()

elif choice == 3:

reset()

print('Data Clear. Ready for new series')

elif choice == 4:

display()

elif choice == 5:

search()

elif choice == 6:

quit = True

clear_data()

else:

print('Invalid Choice!')

summary() uses a compute_average function. Summary displays: Average score, number of inputs, average score for inputs on grade basis, count of A, B, 100s, Os. Same restrictions as in previous version (no built-in functions to be used for sum() or len(), and no additional global variables besides the dictionary)