pexpect.py 文件源码

def getecho (self):

        """This returns the terminal echo mode. This returns True if echo is
        on or False if echo is off. Child applications that are expecting you
        to enter a password often set ECHO False. See waitnoecho(). """

        attr = termios.tcgetattr(self.child_fd)
        if attr[3] & termios.ECHO:
            return True
        return False