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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, *args, **kwargs):
 """Load and render a template into a unicode string."""

        try:
            template_name, args = args[0], args[1:]
        except IndexError:
            raise TypeError('name of template required')
        return self.get_template(template_name).render(*args, **kwargs)