def describe_event_subscriptions(SubscriptionName=None, MaxRecords=None,
    Marker=None):
    """
    Lists descriptions of all the Amazon Redshift event notifications subscription for a customer account. If you specify a subscription name, lists the description for that subscription.
    See also: AWS API Documentation
    
    
    :example: response = client.describe_event_subscriptions(
        SubscriptionName='string',
        MaxRecords=123,
        Marker='string'
    )
    
    
    :type SubscriptionName: string
    :param SubscriptionName: The name of the Amazon Redshift event notification subscription to be described.

    :type MaxRecords: integer
    :param MaxRecords: The maximum number of response records to return in each call. If the number of remaining response records exceeds the specified MaxRecords value, a value is returned in a marker field of the response. You can retrieve the next set of records by retrying the command with the returned marker value.
            Default: 100
            Constraints: minimum 20, maximum 100.
            

    :type Marker: string
    :param Marker: An optional parameter that specifies the starting point to return a set of response records. When the results of a DescribeEventSubscriptions request exceed the value specified in MaxRecords , AWS returns a value in the Marker field of the response. You can retrieve the next set of response records by providing the returned marker value in the Marker parameter and retrying the request.

    :rtype: dict
    :return: {
        'Marker': 'string',
        'EventSubscriptionsList': [
            {
                'CustomerAwsId': 'string',
                'CustSubscriptionId': 'string',
                'SnsTopicArn': 'string',
                'Status': 'string',
                'SubscriptionCreationTime': datetime(2015, 1, 1),
                'SourceType': 'string',
                'SourceIdsList': [
                    'string',
                ],
                'EventCategoriesList': [
                    'string',
                ],
                'Severity': 'string',
                'Enabled': True|False,
                'Tags': [
                    {
                        'Key': 'string',
                        'Value': 'string'
                    },
                ]
            },
        ]
    }
    
    
    :returns: 
    Can be one of the following: active | no-permission | topic-not-exist
    The status "no-permission" indicates that Amazon Redshift no longer has permission to post to the Amazon SNS topic. The status "topic-not-exist" indicates that the topic was deleted after the subscription was created.
    
    """
    pass
