vt100_input.py 文件源码

def __enter__(self):
        # NOTE: On os X systems, using pty.setraw() fails. Therefor we are using this:
        try:
            newattr = termios.tcgetattr(self.fileno)
        except termios.error:
            pass
        else:
            newattr[tty.LFLAG] = self._patch_lflag(newattr[tty.LFLAG])
            newattr[tty.IFLAG] = self._patch_iflag(newattr[tty.IFLAG])
            termios.tcsetattr(self.fileno, termios.TCSANOW, newattr)

            # Put the terminal in cursor mode. (Instead of application mode.)
            os.write(self.fileno, b'\x1b[?1l')