Example Program: Averaging a List


def getNums():
    nums = []
    while True:
        xStr = raw_input("Enter a number: ")
        if xStr == "": break
        nums.append(eval(xStr))
    return nums

def average(lst):
    sum = 0.0
    for num in lst: 
        sum += num
    return sum / len(lst)

data = getNums()
print "Average =", average(data)