Shortcut to instantiate classes.

[proofit404]

Let's say we have a service with high level business logic:

from attrs import define

@define
class Subscription:
    load_order: LoadOrder
    load_customer: LoadCustomer
    create_payment: CreatePayment

    def purchase(self, state):
        ...

To get an instance of this service I would have to define custom factory and manually take all constructor arguments by type from containers.

registry = svcs.Registry()

def subscription_factory(svcs_container):
    return Subscription(
        svcs_container.get(LoadOrder),
        svcs_container.get(LoadCustomer),
        svcs_container.get(CreatePayment),
    )

registry.register_factory(Subscription, subscription_factory)

This is repetitive and requires to change factory every time I change services class init signature.

I would suggest either

• add registry.register_class(Subscription) to be similar to registry.register_value(str, "Hello World!")
• add initialize helper registry.register_factory(Subscription, initialize(Subscription))

Thoughts?

[hynek]

@proofit404!!! Good to see you!

Your suggestion is basically #94, no? 😇

[proofit404]

@hynek good to see you, my friend!

It took me a while to accept my new reality.