type anotation error after upgrade of fastapi to latests,

[michelkluger]

apollo/api.py:75: error: Argument 2 to "add_exception_handler" of "Starlette" has incompatible type "Callable[[Request, RateLimitExceeded], Response]"; expected "Callable[[Request, Exception], Response | Awaitable[Response]] | Callable[[WebSocket, Exception], Awaitable[None]]"

comes from line
app.add_exception_handler(RateLimitExceeded, _rate_limit_exceeded_handler)

how can I fix this?

starlette-0.37.2
fastapi-0.111.0

[ecly]

@michelkluger most likely you're annotating the the function _rate_limit_exceeded_handler to only handle RateLimitExceeded exception type, which will make it incompatible with expected Callable signature.

So the "fix" in this case would be annotate your function as def _rate_limit_exceeded_handler(request: Request, exception: Exception) instead (or just ignore the error, as you know it will only get called with RateLimitExceeded exceptions).