def setFailAction( self, fn ):
        self.failAction = fn
        return self
Replaces a number of subelements with elements from a sequence.
dataset/ETHPy150Open ipython/ipython-py3k/IPython/external/pyparsing/_pyparsing.py/ParserElement.setFailAction--crossover with--dataset/ETHPy150Open flosch/simpleapi/example_project/client/python/sapi/message.py/MessageElement.__setslice__