title: how to remove all special character
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="https://stackoverflow.com/questions/3939361/remove-specific-characters-from-a-string-in-python">Remove specific characters from a string in python</a>  </p>
  </blockquote>
  
  
  
  <p>there's a text:"abc\r egf", I need to filter the '\r', however, I think there's some other special characters I need to filter for other text, maybe '\n', so I want to know whether there's a library can do this job?</p>