title: How to combine multiple regex into single one in python?
body: <p>I'm learning about regular expression. I don't know how to combine different regular expression to make a single generic regular expression.</p>
  
  <p>I want to write a single regular expression which works for multiple cases. I know this is can be done with naive approach by using <em>or</em> <em>" | "</em> operator.</p>
  
  <p>I don't like this approach. Can anybody tell me better approach?</p>