python2.x下jieba编码问题

python3 jieba分词不会遇到UnicodeEncodeError问题，因为在cut函数加入了strdecode函数，处理编码的问题，而python2并没有做处理。

 def cut(self, sentence, cut_all=False, HMM=True):
        '''
        The main function that segments an entire sentence that contains
        Chinese characters into seperated words.

        Parameter:
            - sentence: The str(unicode) to be segmented.
            - cut_all: Model type. True for full pattern, False for accurate pattern.
            - HMM: Whether to use the Hidden Markov Model.
        '''
        sentence = strdecode(sentence)