title: remove usernames from twitter data using python
body: <p>I have fetched some data from Twitter using python. now I want to pre process it. how can I remove usernames if the tweet has username between two words and there is no space among them? I want to keep the words and only delete the username</p>
  
  <p>for eg.
  text file:
  hello @rahulcan you help me?
  yes @tanyatell me?</p>
  
  <p>output i want:
  hello can you help me?
  yes tell me?</p>