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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 check_redis_connected(client):
 """ A built-in check to connect to Redis using the given client and see if it responds to the ``PING`` command. It's automatically added to the list of Dockerflow checks if a :class:`~redis.StrictRedis` instances is passed to the :class:`~dockerflow.flask.app.Dockerflow` class during instantiation, e.g.:: import redis from flask import Flask from dockerflow.flask import Dockerflow app = Flask(__name__) redis_client = redis.StrictRedis(host='localhost', port=6379, db=0) dockerflow = Dockerflow(app, redis=redis) An alternative approach to instantiating a Redis client directly would be using the `Flask-Redis <https://github.com/underyx/flask-redis>`_ Flask extension:: from flask import Flask from flask_redis import FlaskRedis from dockerflow.flask import Dockerflow app = Flask(__name__) app.config['REDIS_URL'] = 'redis://:password@localhost:6379/0' redis_store = FlaskRedis(app) dockerflow = Dockerflow(app, redis=redis_store) """

    import redis
    errors = []

    try:
        result = client.ping()
    except redis.ConnectionError as e:
        msg = 'Could not connect to redis: {!s}'.format(e)
        errors.append(Error(msg, id=health.ERROR_CANNOT_CONNECT_REDIS))
    except redis.RedisError as e:
        errors.append(Error('Redis error: "{!s}"'.format(e),
                            id=health.ERROR_REDIS_EXCEPTION))
    else:
        if not result:
            errors.append(Error('Redis ping failed',
                                id=health.ERROR_REDIS_PING_FAILED))
    return errors