You can bind multiple post_save(pre_save, etc) receivers to a class.
Is there a way to specify the ordering of receipt of signals?
Ordering signal in django would be a good feature but unfortunately Django does not support this as mentioned in this ticket although you can have a close look at Django Signals and the Observer Design Pattern to have better understanding of its pattern & design.
来源：https://stackoverflow.com/questions/20990146/whats-the-order-of-post-save-receiver-in-django