[Python] How to proper instantiate TypeVar typing declaration with a bound variable?

Based on my understanding, I have coded an TypeVar declaration in the following format:

def generate_class(config):
class ClassA:
attr1: str = config["hello"]
attr2: int = process_config(config)
return classA

ClassA = generate_class(config)
ClassAType = TypeVar("ClassAType", bound=ClassA)

vara_info: ClassAType = execute_var()
vara_amount: float = process_var(vara_info)


It used to be able to work properly and VSCode will also be able to map the internal attributes of VarA (as it is a class object) successfully but recently, it is throwing a linting error: "Variable not allowed in type expression".

What is it that I am doing wrong now? I cannot seem to find an answer online for this formatting error despite it not throwing any error during runtime.

I have tried researching on using other Var types instead such as NewType but based on documentation, those are not for binding variables to Typing.

My current python specifications are: python 3.10.6 typing-extensions==4.9.0

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