typing.py 文件源码

def __call__(self):
        #try:
        import sys, tty, termios
        #try:
        #self.fd = sys.stdin.fileno()
        #self.old_settings = termios.tcgetattr(self.fd)
        if True:
        #try:
            tty.setcbreak(sys.stdin.fileno())
            ch = sys.stdin.read(1)
        #finally:
        #    termios.tcsetattr(self.fd, termios.TCSADRAIN, self.old_settings)
        return ch