title: Python regular expression to search for words in a sentence
body: <p>Im still learning the ropes with Python ad regular expressions and I need some help please!
  I am in need of a regular expression that can search a sentence for specific words.
  I have managed to create a pattern to search for a single word but how do i retrieve the other words i need to find?
  How would the re pattern look like to do this?</p>
  
  <pre><code>&gt;&gt;&gt; question = "the total number of staff in 30?"
  &gt;&gt;&gt; re_pattern = r'\btotal.*?\b'
  &gt;&gt;&gt; m = re.findall(re_pattern, question)
  ['total']
  </code></pre>
  
  <p>It must look for the words "total" and "staff"
  Thanks 
  Mike</p>