def METHOD_NAME(event_subscription_name: Optional[str] = None,
                                                             partner_topic_name: Optional[str] = None,
                                                             resource_group_name: Optional[str] = None,
                                                             opts: Optional[pulumi.InvokeOptions] = None) -> AwaitableGetPartnerTopicEventSubscriptionDeliveryAttributesResult:
    """
    Get all delivery attributes for an event subscription of a partner topic.
    :param str event_subscription_name: Name of the event subscription to be created. Event subscription names must be between 3 and 100 characters in length and use alphanumeric letters only.
    :param str partner_topic_name: Name of the partner topic.
    :param str resource_group_name: The name of the resource group within the user's subscription.
    """
    __args__ = dict()
    __args__['eventSubscriptionName'] = event_subscription_name
    __args__['partnerTopicName'] = partner_topic_name
    __args__['resourceGroupName'] = resource_group_name
    opts = pulumi.InvokeOptions.merge(_utilities.get_invoke_opts_defaults(), opts)
    __ret__ = pulumi.runtime.invoke('azure-native:eventgrid/v20230601preview:getPartnerTopicEventSubscriptionDeliveryAttributes', __args__, opts=opts, typ=GetPartnerTopicEventSubscriptionDeliveryAttributesResult).value
    return AwaitableGetPartnerTopicEventSubscriptionDeliveryAttributesResult(
        value=pulumi.get(__ret__, 'value'))