#!/usr/bin/env python

def reverse(text):
    # Function to reverse a line of text
    backword = ""            # The reverse string to be returned
    x = len(text) - 1
    # build the reverse string by reading each char starting from the last
    for letters in range (x, -1, -1):
        backword = backword + text[letters]

    return backword

print(reverse('mary had a little lamb'))