Find Where a Stream Was Cancelled
Beginner
The problem, from first principles
A real-time agent can be cancelled mid-response -- a user closes the chat, navigates away, or explicitly hits stop. Whatever was received before that cancellation is still valid and worth keeping; anything after it never happened as far as the user is concerned and shouldn't be processed.
The task
Write find_cancel_point(events), where each event is (event_type, payload) and event_type is one of "chunk", "tool_call", "done", or "cancel". Return the index of the first "cancel" event, or None if the stream was never cancelled.
Keywords
production-systemsstreamingreal-time-agents
Python
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