When a ``TweepError`` is raised due to an error Twitter responded with,
the error code (`as described in the API documentation
- <https://dev.twitter.com/overview/api/response-codes>`_) can be accessed
+ <https://developer.twitter.com/en/docs/basics/response-codes>`_) can be accessed
at ``TweepError.response.text``. Note, however, that ``TweepError``\ s
also may be raised with other things as message (for example plain
error reason strings).