09/01/03 22:30:11
>>35
コードもらいました
これで逆変換
list1 = ["cat", "dog", "spam", "egg"]
maps = {"animal": ["cat", "dog"]}
transpose = lambda mps: dict((x, key) for key, xs in maps.iteritems() for x in xs)
transform = lambda lst, mps: [item in mps.keys() and mps[item] or item for item in lst]
itransform = lambda lst, mps: sum([item in mps.keys() and mps[item] or [item] for item in lst], [])
#>>> import trans
#>>> m = trans.transpose(trans.maps)
##>>> trans.transform(trans.list1, m)
#['animal', 'animal', 'spam', 'egg']
#>>> s = set(trans.transform(trans.list1, m))
#>>> trans.itransform(trans.list1, trans.maps)
#['cat', 'dog', 'spam', 'egg']