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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 get_tls_redis_url(redis_url):
 """ Returns the TLS version of a Heroku REDIS_URL string. Whilst Redis server (like memcached) doesn't natively support TLS, Heroku runs an stunnel daemon on their Redis instances, which can be connected to directly by Redis clients that support TLS (avoiding the need for stunnel on the client). The stunnel port is one higher than the Redis server port, and the informal `rediss://` scheme used to instruct clients to wrap the connection with TLS. Will convert 'redis://h:PASSWORD@INSTANCE.compute-1.amazonaws.com:8409' See: https://devcenter.heroku.com/articles/securing-heroku-redis#connecting-directly-to-stunnel """

    url = furl(redis_url)
    url.port += 1
    url.scheme += 's'
    # Disable TLS certificate validation (restoring the behaviour of the older redis-py 2.x),
    # since for now Heroku Redis uses self-signed certificates:
    # https://bugzilla.mozilla.org/show_bug.cgi?id=1510000
    url.args['ssl_cert_reqs'] = 'none'
    return str(url)