Python subscriptions are not type safe

[domire8]

modulo/source/modulo_components/modulo_components/component_interface.py

Line 429 in 59b4b6e

self.__setattr__(attribute_name, reader(message))

@yrh012 found out that if you add an input of a certain state representation type (so EncodedType), and connect it to a topic that is also publishing an encoded state but of different state representation type, the attribute will be overridden with the received message. If we want to be consistent with C++, we should probably attempt a cast on the received message such that the attribute type of the subscribing component doesn't change.

Opinions? @eeberhard @bpapaspyros

[eeberhard]

Classic Python. It's true that from the users perspective, the type of the class attribute should not change if a valid input is received and decoded. For the best way to implement it, I am not sure, but it seems like a reasonable backlog issue to address whenever a contributor has some time.