commandsession/commandsession.py
def last_error(self):
        """Get the output of the last command exevuted."""
        if not len(self.log):
            raise RuntimeError('Nothing executed')

        try:
            errs = [l for l in self.log if l[1] != 0]

            return errs[-1][2]
        except IndexError:
            # odd case where there were no errors
            #TODO
            return 'no last error'
def last_error(self):
        """Get the output of the last command exevuted."""
        if not len(self.log):
            raise RuntimeError('Nothing executed')

        try:
            errs = [l for l in self.log if l[1] != 0]

            return errs[-1][2]
        except IndexError:
            # odd case where there were no errors
            #TODO
            return 'no last error'
Get the output of the last command exevuted.