08. Graduation - While Loop Lab

name_student = input()

all_grades = 0
sum_grade = 0
bad_grade = 0

while all_grades <= 12:
    grade = float(input())
    all_grades += 1
    sum_grade += grade

    if grade < 4.00:
        bad_grade += 1

        if bad_grade == 2:
            all_grades -= 1
            print(f"{name_student} has been excluded at {all_grades} grade")
            break

    if all_grades == 12:
            print(f"{name_student} graduated. Average grade: {sum_grade / all_grades:.2f}")
            break