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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _setup(self, delete=True):
 """Create a function instance and execute setup. Args: delete (bool):
 Delete buffered variables. """

        if delete:
            self.clear()
        with nn.context_scope(self.ctx):
            outputs = self.func(
                *(self.inputs_f + self.func_args), **self.func_kwargs)
            if not hasattr(outputs, '__iter__'):
                self.outputs = [outputs]
            else:
                self.outputs = outputs
        self.func_ins = self.outputs[0].parent
        self.inputs = self.func_ins.inputs