Question $5$

$20$ Marks

I

Write a function called text encode that takes in a string and a codebook and for each letter converts it to the encoded version of our text.

The input will be a string of undefined length containing the characters $A-Z,a-Z$ and $\text{'},($the literal space$).$

The codebook has to be at least as long as the string being encoded. For each step you will pull a character from the text to encode, and a char from the codebook, encode them and append the result to a string for return.

NOTE that codebooks and input strings used for testing will be valid $($they will only contain A$-$Z$,$ a$-$z and $\text{'}\text{'}$ and the codebook will be of appropriate length or longer$).$

def text$\_$encode$($text$\_$to$\_$encode:str$,$ codebook:str$)$ str:

# YOUR IMPLEMENTATION