log.py 文件源码

def __init__(self, *args, **kwargs):
        logging.Formatter.__init__(self, *args, **kwargs)
        self._coloured = COLOURED and _stderr_supports_color()
        if self._coloured:
            curses.setupterm()
            # The curses module has some str/bytes confusion in
            # python3.  Until version 3.2.3, most methods return
            # bytes, but only accept strings.  In addition, we want to
            # output these strings with the logging module, which
            # works with unicode strings.  The explicit calls to
            # unicode() below are harmless in python2 but will do the
            # right conversion in python 3.
            fg_color = (curses.tigetstr("setaf") or curses.tigetstr("setf") or
                        "")
            if (3, 0) < sys.version_info < (3, 2, 3):
                fg_color = unicode(fg_color, "ascii")
            self._colors = {
                # blues
                logging.DEBUG: unicode(curses.tparm(fg_color, 4), "ascii"),
                # green
                logging.INFO: unicode(curses.tparm(fg_color, 2), "ascii"),
                # yellow
                logging.WARNING: unicode(curses.tparm(fg_color, 3), "ascii"),
                # red
                logging.ERROR: unicode(curses.tparm(fg_color, 1), "ascii")
            }
            self._normal = unicode(curses.tigetstr("sgr0"), "ascii")