data

def take_info(database):
    while True:
        c = input("Do you want to enter student info (y/n): ")
        if c == "n":
            break
        elif c == "y":
            name = input("Enter the student name: ")
            mid1 = int(input("Enter midterm 1 grade: "))
            mid2 = int(input("Enter midterm 2 grade: "))
            final = int(input("Enter final exam grade: "))
            student = {"name":name, "midterm_1":mid1, "midterm_2":mid2, "final":final}
            database.append(student)


def print_info(database):
    n = input("Enter student name: ")
    names = []
    for student in database:
        names.append(student["name"])
    if n not in names:
        print(f'No info for {n}')
    else:
        print(database[names.index(n)])



def print_stat(database):
    midterm_1 = []
    midterm_2 = []
    final = []
    for student in database:
        midterm_1.append(student["midterm_1"])
        midterm_2.append(student["midterm_2"])
        final.append(student["final"])
    if len(midterm_1)>0:
        print(f"midterm_1: max= {max(midterm_1)}, min= {min(midterm_1)}, avg= {sum(midterm_1)/len(midterm_1)}.")
        print(f"midterm_2: max= {max(midterm_2)}, min= {min(midterm_2)}, avg= {sum(midterm_2) / len(midterm_2)}.")
        print(f"final: max= {max(final)}, min= {min(final)}, avg= {round(sum(final) / len(final)),2}.")


database = []
while True:
    print('''0. Exit
1. Enter student info
2. Print grades for a student
3. Print class max, min, and average grades''')
    choice = input("Enter your choice: ")
    if choice == "0":
        exit()
    elif choice == "1":
        take_info(database)
    elif choice == "2":
        print_info(database)
    elif choice == "3":
        print_stat(database)
    print()