adding_students.py

# it's a way with using global vars without passing values as formal params(arguments) to functions


# defining global vars for program
grade_book = {}
s_name = ""
s_grade1 = 0
s_grade2 = 0
s_grade3 = 0

def menu():
    return (input("would you like add new student? ").lower() in ["y", "yes"])


def add_student():
    # this vars are global in local name scoope
    global s_name
    global s_grade1
    global s_grade2
    global s_grade3

    s_name = input("name of student: ")
    print(f"Enter grades for student: {s_name}")
    s_grade1 = int(input("grade 1: "))
    s_grade2 = int(input("grade 2: "))
    s_grade3 = int(input("grade 3: "))

def disp_grade_book():
    # this vars are global in local name scoope
    global grade_book
    global s_name
    global s_grade1
    global s_grade2
    global s_grade3

    grade_book[s_name] = [s_grade1, s_grade2, s_grade3]

    for name, grades in grade_book.items():
        print(f"grades for student {name}: ")
        for grade in grades:
            print(grade)

if menu():
    add_student()
    disp_grade_book()