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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_publ_template(template, **kwargs):
 """ Render out a template, providing the image function based on the args. Returns tuple of (rendered text, etag) """

    text = render_template(
        template.filename,
        template=template,
        image=image_function(
            template=template,
            category=kwargs.get('category'),
            entry=kwargs.get('entry')),
        **kwargs
    )

    return text, caching.get_etag(text)