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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def term_width():
 """ Return the column width of the terminal, or ``None`` if it can't be determined. """

    if fcntl and termios:
        try:
            winsize = fcntl.ioctl(0, termios.TIOCGWINSZ, '    ')
            _, width = struct.unpack('hh', winsize)
            return width
        except IOError:
            pass
    elif windll and create_string_buffer:  # pragma: no cover (windows)
        stderr_handle, struct_size = -12, 22
        handle = windll.kernel32.GetStdHandle(stderr_handle)
        csbi = create_string_buffer(struct_size)
        res = windll.kernel32.GetConsoleScreenBufferInfo(handle, csbi)
        if res:
            (_, _, _, _, _, left, _, right, _,
             _, _) = struct.unpack('hhhhHhhhhhh', csbi.raw)
            return right - left + 1
        else:
            return 0