<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def render_as_text(self, limit=None):
 """Return a string with the traceback."""

        lines = traceback.format_exception(self.exc_type, self.exc_value,
                                           self.frames[0], limit=limit)
        return ''.join(lines).rstrip()