def found_terminator(self):
        line = b''.join(self.in_buffer).decode('ascii')
        self.in_buffer = []
        if self.next_response:
            self.push(self.next_response)
            self.next_response = ''
        cmd = line.split(' ')[0].lower()
        self.last_received_cmd = cmd
        space = line.find(' ')
        if space != -1:
            arg = line[space + 1:]
        else:
            arg = ""
        if hasattr(self, 'cmd_' + cmd):
            method = getattr(self, 'cmd_' + cmd)
            method(arg)
        else:
            self.push(cmd %'550 command "%s" not understood.')
dataset/ETHPy150Open amrdraz/kodr/app/brython/www/src/Lib/test/test_ftplib.py/DummyFTPHandler.found_terminator/swapped operands of `%`