idiombench / Python /train /3.8 /protocol /modern_22.py
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IdiomBench (part 10)
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# callbacks.py
def on_error(x: int) -> None:
...
def on_success() -> None:
...
# main.py
import callbacks
from typing import Protocol
class Reporter(Protocol):
def on_error(self, x: int) -> None:
...
def on_success(self) -> None:
...
rp: Reporter = callbacks # Passes type check