小编Mar*_*ars的帖子

我想用一句话替换出现一次的单词'<unk>'.喜欢一句话:hello hello world my world,我想要输出hello hello world <unk> world,怎么做？

现在我这样做:

 wordlist1 = trainfiles.split(None)
        wordlist2 = []
        for word1 in wordlist1:
            lastchar = word1[-1:]
            if lastchar in [",",".","!","?",";"]:
                word2 = word1.rstrip(lastchar)
            else:
                word2 = word1
            wordlist2.append(word2)
        freq = {}
        for word2 in wordlist2:
            freq[word2] = freq.get(word2,0)+1
        keylist = freq.keys()
        keylist.sort()

    for key2 in keylist:
        if freq[key2] == 1:
            print "%-10s %d" % ('<unk>', freq[key2])
        else:
            print "%-10s %d" % (key2, freq[key2])

这给了我一个输出:

hello   2
<unk> …