Lab Description:

This example is to write a function that takes a string as an argument and displays the letters backward, one per line. The next example for excercise 3, is to write function that takes a list of numbers and returns the cumulative sum; that is, a new list where the ith element is the sum of the first i+1 elements from the original list. For example, the cumulative sum of [1, 2, 3] is [1, 3, 6].

Code:

name = input(‘enter a name: ‘) len_name = len(name) name_rev = name[len_name – 1] print(name_rev) len_name = len_name-1

while len_name != 0:     name_rev = name[len_name – 1]     print (name_rev)     len_name = len_name – 1

#Excersise 3

def add_all(t):     total = 0     for x in t:         total = total + x     return total

t = [1, 2, 4, 8, 16] sum (t)

ScreenShots: