How to update/delete the attribute of an object using F5 SDK

I believe you are after an iControl REST method equivalent to the following tmsh:

tmsh modify net self allow-service none

In iControl REST, use an empty list [] for none. A curl example is shown below. The same method should work for Python SDK too.

curl -sku admin: https:///mgmt/tm/net/self/-H "Content-Type: application/json" -X PATCH -d '{"allowService":[]}'