partially initialized module 'azure.functions' has no attribute 'get_binding_registry'

[gavin-aguiar]

Announcement

We have identified an issue with python 3.9 functions apps using the V2 programming model.
Some of the invocations are failing with the following error:

Failure Exception: 
AttributeError: partially initialized module 'azure.functions' has no 
attribute 'get_binding_registry' (most likely due to a circular import) 
Stack: 
  File '/azure_functions_worker/dispatcher.py', line 434, 
       in _handle__invocation_request if bindings.is_trigger_binding(pb_type_info.binding_name):
  File '/azure_functions_worker/bindings/meta.py', line 39, 
       in is_trigger_binding binding = get_binding(bind_name) 
  File '/azure_functions_worker/bindings/meta.py', line 29, 
       in get_binding registry = get_binding_registry() 
  File '/azure_functions_worker/bindings/meta.py', line 24, 
       in get_binding_registry return func.get_binding_registry()

Mitigation
Add the app setting PYTHON_ENABLE_WORKER_EXTENSIONS to 0 to the function app.

Fix
We are working on a fix and will send out an update shortly.

[TarekSalha]

today, I receiced the same error also for my py 3.9 app during some of the function invocations. Seems like the error is still present.