python2.x下jieba編碼問題

python3 jieba分詞不會遇到UnicodeEncodeError問題，因爲在cut函數加入了strdecode函數，處理編碼的問題，而python2並沒有做處理。

 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)