New-style middleware

Hallöchen!

Considering the following old-style middleware class:

class ExceptionsMiddleware:
def process_exception(self, request, exception):
...

I convert this to new-style middleware by inserting two methods:

class ExceptionsMiddleware:
def __init__(self, get_response):
self.get_response = get_response
def __call__(self, request):
return self.get_response(request)
def process_exception(self, request, exception):
...

Is this really correct? Actually, the old way looks more concise to
me. In particular, is there a reason why Django does not provide a
non-deprecated base class for middleware like:

class Middleware:
def __init__(self, get_response):
self.get_response = get_response
def __call__(self, request):
return self.get_response(request)

(I know MiddlewareMixin but it is deprecated.)

Tschö,
Torsten.

--
Torsten Bronger

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