Python: Difference between filter(function, sequence) and map(function, sequence)

Question

I\'m reading through the Python documentation to really get in depth with the Python language and came across the filter and map functions. I have used filter before, but never

Answer 1

filter(function, iterable) function (pointer, like in C) return boolean type

map(function, iterable) function (pointer, like in C) return e.g. int

def filterFunc(x):
    if x & 1 == 0:
        return False
    return True


def squareFunc(x):
    return x ** 2


def main():
    nums = [5, 2, 9, 4, 34, 23, 66]
    odds = list(filter(filterFunc, nums))   # filter(function, iterable)
    print(odds)

    square = list(map(squareFunc, nums))    # map(function, iterable)
    print(square)


if __name__ == '__main__':
    main()