Run command in interpreter

def run_command(self, cmd, history=True, new_prompt=True):
        """Run command in interpreter"""
        if not cmd:
            cmd = ''
        else:
            if history:
                self.add_to_history(cmd)
        if not self.multithreaded:
            if 'input' not in cmd:
                self.interpreter.stdin_write.write(
                                                to_binary_string(cmd + '\n'))
                self.interpreter.run_line()
                self.refresh.emit()
            else:
                self.write(_('In order to use commands like "raw_input" '
                             'or "input" run Spyder with the multithread '
                             'option (--multithread) from a system terminal'),
                           error=True)
        else:
            self.interpreter.stdin_write.write(to_binary_string(cmd + '\n'))