color.py 文件源码

def has_colors(stream):
    '''Returns boolean indicating whether or not the supplied stream supports
    ANSI color.
    '''
    if not hasattr(stream, "isatty"):
        return False
    if not stream.isatty():
        return False # auto color only on TTYs
    try:
        import curses
        curses.setupterm()
        return curses.tigetnum("colors") > 2
    except:
        # guess false in case of error
        return False