Interfaces with Protocols and ABCs

Your learning sequence

1. 1 Accept Any Object That Has the Right Methods Read
2. 2 Not solved yet.○ Write a Protocol for Three Unrelated Classes Practice · Easy
3. 3 Choose Between a Protocol and an ABC Read
4. 4 Not solved yet.○ Build an ABC with an Abstract Property and Classmethod Practice · Easy
5. 5 Not solved yet.○ Catch the Backends That isinstance Lets Through Practice · Medium
6. 6 Not solved yet.○ Inherit a Default Method from a Protocol Practice · Medium
7. 7 Not solved yet.○ Type a Handler Registry with a Callback Protocol Practice · Medium
8. 8 Not solved yet.○ Fix the Variance of a Serializer and a Parser Practice · Hard
9. 9 Not solved yet.○ Make a Protocol Member Read-Only with a Property Practice · Hard
10. 10 Not solved yet.○ Describe a Dictionary's Keys with TypedDict Practice · Easy
11. 11 Not solved yet.○ Accept Three Event Types with a Read-Only TypedDict Practice · Medium
12. 12 Not solved yet.○ Type **kwargs with a TypedDict and Unpack Practice · Medium
13. 13 Not solved yet.○ Type a Lookup with a Default Using Overloads Practice · Hard
14. 14 Not solved yet.○ Write Decorators That Keep the Signature with ParamSpec Practice · Hard
15. 15 Not solved yet.○ Check Number Ranges at Runtime with Annotated Practice · Medium
16. 16 Not solved yet.○ Restrict One Method to String Builders with Self Types Practice · Medium
17. 17 Not solved yet.○ Find Where Any Leaks into Function Signatures Practice · Medium
18. 18 Not solved yet.○ Validate Records with TypeIs Instead of cast Practice · Medium
19. 19 Not solved yet.○ Clean Up type: ignore Comments Practice · Easy
20. 20 Not solved yet.○ Work Out What __all__ and Re-exports Make Public Practice · Medium
21. 21 Ship Your Library's Type Hints with py.typed Read
22. 22 Not solved yet.○ Write a Minimal Stub for an Untyped Package Practice · Hard
23. 23 Not solved yet.○ Keep the Type at Each Tuple Position with TypeVarTuple Practice · Hard
24. 24 Control the Extra Keys of a TypedDict Read
25. 25 Accept Types Like str | None as Arguments with TypeForm Read
26. 26 Why Some Classes Cannot Share a Subclass Read

from typing import NotRequired, TypedDict


class User(TypedDict):
    name: str
    email: NotRequired[str]


ada: User = {"name": "Ada"}