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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 _render(self, context):
        " The main function that takes care of the rendering. "
        if self.template_name:
            t = loader.get_template(self.template_name)
        else:
            t_list = self._get_template_list()
            t = loader.select_template(t_list)

        context.update(self.get_context())
        resp = t.render(context)
        context.pop()
        return resp