def addParseAction( self, *fns, **kwargs ):
        """Add parse action to expression's list of parse actions. See L{I{setParseAction}<setParseAction>}."""
        self.parseAction += list(map(_trim_arity, list(fns)))
        self.callDuringTry = self.callDuringTry or ("callDuringTry" in kwargs and kwargs["callDuringTry"])
        return self
dataset/ETHPy150Open Exa-Networks/exabgp/lib/exabgp/dep/pyparsing.py/ParserElement.addParseAction/original