gistfile1.txt

>>> import pty, os, termios
>>> master, slave = pty.openpty()
>>> master, slave
(3, 5)
>>> termios.tcgetattr(master)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
termios.error: (22, 'Invalid argument')
>>> termios.tcgetattr(slave)
[9474, 6149, 189, 35387, 0, 13, ['\x03', '\x1c', '\x7f', '\x15', '\x04', '\x00', '\x00', '\x00', '\x11', '\x13', '\x1a', '\x19', '\x12', '\x0f', '\x17', '\x16', '\x00', '\x00', '\x00']]
>>> os.isatty(master)
False
>>> os.isatty(slave)
True
>>> os.ttyname(slave)
'/dev/pts/1'