termsiz.py

def get_terminal_size(fd=1):
    """
    Returns height and width of current terminal. First tries to get
    size via termios.TIOCGWINSZ, then from environment. Defaults to 25
    lines x 80 columns if both methods fail.

    :param fd: file descriptor (default: 1=stdout)
    """
    try:
        import fcntl, termios, struct
        hw = struct.unpack('hh', fcntl.ioctl(fd, termios.TIOCGWINSZ, '1234'))
    except:
        try:
            hw = (os.environ['LINES'], os.environ['COLUMNS'])
        except:  
            hw = (25, 80)

    return hw

def get_terminal_height(fd=1):
    import os
    """
    Returns height of terminal if it is a tty, 999 otherwise

    :param fd: file descriptor (default: 1=stdout)
    """
    if os.isatty(fd):
        height = get_terminal_size(fd)[0]
    else:
        height = 999
   
    return height

def get_terminal_width(fd=1):
    import os
    """
    Returns width of terminal if it is a tty, 999 otherwise

    :param fd: file descriptor (default: 1=stdout)
    """
    if os.isatty(fd):
        width = get_terminal_size(fd)[1]
    else:
        width = 999

    return width