[yen223]

I agree.

Type-checking in general is good. However, Python's type-checking mechanisms are bad. The syntax for adding types is very obviously bolted on, they miss basic type errors all the time, and third-party libraries often miss type annotations anyway.

Python is fundamentally a duck-typed language, and that's how you should use it. If type-checking is important to you, use a language that is designed for it.

[roland35]

Eh it's either Python or C++ with ROS, and Python is much easier to work with. Adding type checks to method arguments isn't much different than doing it in Rust, and makes life much easier with anything larger a tiny program.

If there is anything complicated, you can either make a quick generic type (TypeVar) or even just throw in an Any type! I had to do that recently with a function that handled different ROS services, which apparently do not share any base class.