This library is the METER bulletin parser using pyparsing.
http://pyparsing.wikispaces.com/
http://en.wikipedia.org/wiki/METAR http://ja.wikipedia.org/wiki/%E5%AE%9A%E6%99%82%E9%A3%9B%E8%A1%8C%E5%A0%B4%E5%AE%9F%E6%B3%81%E6%B0%97%E8%B1%A1%E9%80%9A%E5%A0%B1%E5%BC%8F