This program word_triangle.py contains two functions, iterative_triangle and

recursive_triangle, which take a string as input and print a triangle of its letters. A

sample run might look like this:

enter a word: Python

Python

ython

thon

hon

on

n

The function len cannot be used.

Using this code as a resource for studying by looking at it and seeing how it works. This work will not be submitted. I do not know how to do something like this with a string without the function len.