def addParseAction( self, *fns, **kwargs ):
        """
        Add one or more parse actions to expression's list of parse actions. See L{I{setParseAction}<setParseAction>}.
        
        See examples in L{I{copy}<copy>}.
        """
        self.parseAction += list(map(_trim_arity, list(fns)))
        self.callDuringTry = self.callDuringTry or kwargs.get("callDuringTry", False)
        return self

        Add one or more parse actions to expression's list of parse actions. See L{I{setParseAction}<setParseAction>}.
        
        See examples in L{I{copy}<copy>}.
        
src/pkg_resources/_vendor/pyparsing.py