keyboard_detection.py 文件源码

def __enter__(self):
        # save the terminal settings
        self.fd = sys.stdin.fileno()
        self.new_term = termios.tcgetattr(self.fd)
        self.old_term = termios.tcgetattr(self.fd)

        # new terminal setting unbuffered
        self.new_term[3] = (self.new_term[3] & ~termios.ICANON & ~termios.ECHO)     

        # switch to unbuffered terminal
        termios.tcsetattr(self.fd, termios.TCSAFLUSH, self.new_term)

        return self.query_keyboard