While going through merge proposal, I ran across this one from Mark Washenberger about limiting the number of decorators to 2 in nova code: <https://review.openstack.org/2966>
There's some good discussion on this in the proposal comments, but I thought it should hit the mailing list as well, in case folks wanted to weigh in but hadn't seen the proposal (I don't have a strong opinion pro or con here). Here's the proposed addition for HACKING: Decorators ---------- A function or method should not have more than two decorators applied to it where it is defined. Decorators are a powerful feature of Python that can eliminate some repetitive code. However, decorator usage can be more difficult to debug or maintain than alternative approaches to reduce repetition. These difficulties multiply when decorators are stacked on top of each other. To ensure judicious use, we therefore limit decorator depth to no more than two. Take care, Lorin -- Lorin Hochstein Lead Architect - Cloud Services Nimbis Services, Inc. www.nimbisservices.com
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