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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_to_string(self, template_file, context):
 """Render given template to string and add object to context"""

        context = context if context else {}
        if self.object:
            context['object'] = self.object
            context[self.object.__class__.__name__.lower()] = self.object
        return render_to_string(template_file, context, self.request)