如何在python中使用max命令或类似的“inside”命令?

def main():

    line = input("How many numbers are included? \n")

    numbers_included = int(line)

    i = 0

    sum = 0
    print("Each number should be placed on separate row")
    while i < numbers_included:
        line = input ("")
        number = int(line)
        sum = sum + number
        i = i + 1
    average = sum / numbers_included
    print("Average is",average)
    print("and the biggest digit is", max(number))

main()
def main():

    line = input("How many numbers