What The Caller Sees

1def add_bonus(marks: list[int]) -> None:
2    marks[0] = marks[0] + 5
3 
4def reset(marks: list[int]) -> None:
5    marks = [0, 0]
6 
7grades: list[int] = [70, 80]
8add_bonus(grades)
9print(grades)
10reset(grades)
11print(grades)