title: How to change a string input by the user into a dictionary with a key and value
body: <pre><code>sentence = input ("give sentence")    
  user input = HELLO I LOVE PYTHON
  </code></pre>
  
  <p>I want the sentence given to be changed into the format, with a variable <code>sentence_dict</code></p>
  
  <pre><code>{1:HELLO, 2:I, 3:LOVE, 4:PYTHON}
  </code></pre>