This is a question out of Tony Gaddis Getting started with python chapter 9: Question 4, Unique Words

The question reads:

'Write a program that opesn a specified text file and then displays a list of all the unique words found in the file.'

Hint: Store each word as an element of a set.

Can anybody help me figure out why Im getting this output.

# Chapter 9: Question 4, Unique Words # Program to display unique words from a text file read file -open ('word. txt', 'r') stread = readfile. read ( ) read file.close word = - - # Assigning it to blank to store a word unique words = set() for character in str read: # Runs a loop for each variable in strread - if character != H: word word + character else: unique words.add (word) word # Assigning blank again to store another word print (unique words)