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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def handle(self, error, connection):
 """ Handle any cleanup or similar activity related to an error occurring on a pooled connection. """

        error_class = error.__class__
        if error_class in (ConnectionExpired, ServiceUnavailable, DatabaseUnavailableError):
            self.deactivate(connection.address)
        elif error_class in (NotALeaderError, ForbiddenOnReadOnlyDatabaseError):
            self.remove_writer(connection.address)