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Say I have the following simple example without any typehints: def wrapper(cls): class Subclass… Read more Class Decorator Compatible For Mypy

Give something as follows: import importlib module_path = 'mod' mod = importlib.import_mod… Read more Typehint Importing Module Dynamically Using Importlib

I am trying the typing hint introduced by Python 3.5 and got a problem by using local stubs as the … Read more Using Mypy Local Stubs

TypeVar and NewType seem related but I'm not sure when I'm supposed to use each or what the… Read more What Is The Difference Between Typevar And Newtype?

I have a decorator which adds a user onto the flask global context g: class User: def __init__(… Read more How Can I Add Python Type Annotations To The Flask Global Context G?

mypy --strict dutifully complains about the following code: from typing import Any, Dict def main(… Read more How To Make Mypy Complain About Assigning An Any To An Int

I have a message container that can contain different kinds of messages. For now, there are only te… Read more Mypy And Attrs: Errors Typechecking Lists Of Subclasses

I am using mypy to check my Python code. I have a class where I set dynamically some attributes and… Read more Remove Error From Mypy For Attributes Set Dynamically In A Python Class

I currently use this strategy when I cannot assign default arguments in a function's signature … Read more Type-hinting Parameters With A Sentinel Value As The Default

Why does Mypy complain that it requires a type annotation for a list comprehension variable, when i… Read more Why Is Mypy Complaining About List Comprehension When It Can't Be Annotated?

I want to iterate over List[A] and List[Subclass of A] and do the same loop. The best way I can see… Read more How Do I Make A Type Annotation For A List Of Subclass Instances, E.g To Concatenate Two Lists?

How should a context manager be annotated with Python type hints? import typing @contextlib.contex… Read more Python Type Hints And Context Managers

I am writing a CustomEnum class in which I want to add some helper methods, that would then be avai… Read more Type Hint For Return Value In Subclass

Consider the following self-contained example: from typing import List, Union T_BENCODED_LIST = Un… Read more Incompatible Types In Assignment (expression Has Type "list[]", Variable Has Type (...)