environment/lib/python2.7/site-packages/IPython/external/pexpect/_pexpect.py
def getwinsize(self):

        """This returns the terminal window size of the child tty. The return
        value is a tuple of (rows, cols). """

        TIOCGWINSZ = getattr(termios, 'TIOCGWINSZ', 1074295912L)
        s = struct.pack('HHHH', 0, 0, 0, 0)
        x = fcntl.ioctl(self.fileno(), TIOCGWINSZ, s)
        return struct.unpack('HHHH', x)[0:2]
def getwinsize(self):

        """This returns the terminal window size of the child tty. The return
        value is a tuple of (rows, cols). """

        TIOCGWINSZ = getattr(termios, 'TIOCGWINSZ', 1074295912L)
        s = struct.pack('HHHH', 0, 0, 0, 0)
        x = fcntl.ioctl(self.fileno(), TIOCGWINSZ, s)
        return struct.unpack('HHHH', x)[0:2]
This returns the terminal window size of the child tty. The return
        value is a tuple of (rows, cols).