Higher order functions in python with typing

higherOrderFunctions.py

def apply_operation(operation: Callable[[int], int], numbers: List[int]) -> List[int]:
    result = []
    for num in numbers:
        result.append(operation(num))
    return result


def square(num: int) -> int:
    return num * num


def cube(num: int) -> int:
    return num * num * num


operation_result = apply_operation(square, [1, 2, 3, 4, 5])
print(operation_result)


# data transformation
playlist = [
    ("What Was I Made For?", 3.42),
    ("Just Like That", 5.05),
    ("Song 3", 6.8),
    ("Leave The Door Open", 4.02),
    ("I Can't Breath", 4.47),
    ("Bad Guy", 3.14),
]

songs_longer_than_five_minutes = list(filter(lambda t: t[1] > 5, playlist))

def minutes_to_seconds(m: int) -> int:
    minutes = int(m)
    seconds = (m - minutes) * 100
    return minutes * 60 + round(seconds)

songs_with_duration_in_seconds = list(map(lambda t: minutes_to_seconds(t[1]), playlist))

total_duration_of_playlist = reduce(
    lambda accumulator, current: accumulator + current[1], playlist, 0
)