python类open()的实例源码

def __init__(self, codes, separator='@@'):            

        with codecs.open(codes.name, encoding='utf-8') as codes:
            self.bpe_codes = [tuple(item.split()) for item in codes]

        # some hacking to deal with duplicates (only consider first instance)
        self.bpe_codes = dict([(code,i) for (i,code) in reversed(list(enumerate(self.bpe_codes)))])

        self.separator = separator