def parseImpl(self, instring, loc, doActions=True ):
        if loc != 0:
            if (instring[loc-1] in self.wordChars or
                self.wordChars not in instring[loc]):
                raise ParseException(instring, loc, self.errmsg, self)
        return loc, []
dataset/ETHPy150Open Exa-Networks/exabgp/lib/exabgp/dep/pyparsing.py/WordStart.parseImpl/swapped operands of `not in`