def GetUser(self, user):
    '''Returns a single user.

    The twitter.Api instance must be authenticated.

    Args:
      user: The username or id of the user to retrieve.

    Returns:
      A twitter.User instance representing that user
    '''
    url = TWITTER_API_ROOT + 'users/show/%s.json' % user
    json = self._FetchUrl(url)
    data = simplejson.loads(json)
    self._CheckForTwitterError(data)
    return User.NewFromJsonDict(data)
Returns a single user.

    The twitter.Api instance must be authenticated.

    Args:
      user: The username or id of the user to retrieve.

    Returns:
      A twitter.User instance representing that user
    
twitter/twitter.py