termios.tcsetattr()

termios.tcsetattr(fd, when, attributes) → None

Set the tty attributes for file descriptor fd. The attributes to be set are taken from the attributes argument, which is a list like the one returned by tcgetattr(). The when argument determines when the attributes are changed: termios.TCSANOW to change immediately, termios.TCSADRAIN to change after transmitting all queued output, or termios.TCSAFLUSH to change after transmitting all queued output and discarding all queued input.