title: Removing common words from a string?
body: <p>I'm trying to filter common words to end up with a city name.</p>
  
  <p>Here's what I have:</p>
  
  <pre><code>import re
  ask = "What's the weather like in Lexington, SC?"
  REMOVE_LIST = ["like", "in", "how's", "hows", "weather", "the", "whats", "what's", "?"]
  remove = '|'.join(REMOVE_LIST)
  regex = re.compile(r'\b('+remove+r')\b', flags=re.IGNORECASE)
  out = regex.sub("", ask)
  </code></pre>
  
  <p>and it outputs:</p>
  
  <pre><code>nothing to repeat
  </code></pre>