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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 create_jinja_env():
 """Create a Jinja2 `~jinja2.Environment`. Returns ------- env : `jinja2.Environment` Jinja2 template rendering environment, configured to use templates in ``templates/``. """

    template_dir = os.path.join(os.path.dirname(__file__), 'templates')
    env = jinja2.Environment(
        loader=jinja2.FileSystemLoader(template_dir),
        autoescape=jinja2.select_autoescape(['html'])
    )
    env.filters['simple_date'] = filter_simple_date
    env.filters['paragraphify'] = filter_paragraphify
    return env