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from typing import Protocol
from abc import abstractmethod
from card import Card
class Scheduler(Protocol):
"""
Schedulers must implement this interface to be usable in a session.
"""
@abstractmethod
def __init__(self, cards: dict[str, Card], state: dict):
"""
Create a new instance of the scheduler from a dictionary of
Cards indexed by ID and a scheduler-specific state as a dict.
"""
raise NotImplementedError
@abstractmethod
def practice(self, size: int) -> list[str]:
"""
Return a list of card IDs of the requested size, if possible.
This list is intended for practice.
"""
raise NotImplementedError
@abstractmethod
def test(self, size: int) -> list[str]:
"""
Return a list of card IDs of the requested size, if possible.
This list is intended to test the player's knowledge.
"""
raise NotImplementedError
@abstractmethod
def update(self, results: dict[str, int]) -> None:
"""
Takes a dictionary of card IDs and integers, where the integer
is 0 if the player failed to guess the other side of the card,
of 1 if the player succeeded.
"""
raise NotImplementedError
@abstractmethod
def getState(self) -> dict:
"""
Return the scheduler's state for storage.
"""
raise NotImplementedError
SCHEDULERS = ["brutal"]
def getSchedulerClass(name: str) -> Scheduler:
"""
Returns the class object for the requested scheduler, if one exists.
"""
match name:
case "brutal":
from scheduler_brutal import SchedulerBrutal
return SchedulerBrutal
case _:
raise Exception(f"Unknown scheduler: {name}")
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