pyparsing.py 文件源码

def __iadd__( self, other ):
        if other.__tokdict:
            offset = len(self.__toklist)
            addoffset = lambda a: offset if a<0 else a+offset
            otheritems = other.__tokdict.items()
            otherdictitems = [(k, _ParseResultsWithOffset(v[0],addoffset(v[1])) )
                                for (k,vlist) in otheritems for v in vlist]
            for k,v in otherdictitems:
                self[k] = v
                if isinstance(v[0],ParseResults):
                    v[0].__parent = wkref(self)

        self.__toklist += other.__toklist
        self.__accumNames.update( other.__accumNames )
        return self