asyncio

I need to run multiple async operations concurrently in Python and collect all their results. Some operations may fail and I want to handle errors per-task. I'm using Python 3.11+ and want to use the ...

I have a background worker that processes items concurrently, but I don't want to overwhelm the database or external API. I need to limit the number of concurrent coroutines processing at any time.

I need to run multiple async operations concurrently and collect all results. I want to handle cases where some may fail independently and need Python 3.11+ structured concurrency approach.

Need to push real-time updates to connected clients when events occur (e.g., trace validated, vote received). Using Server-Sent Events (SSE) for the client side, need Redis pub/sub to fan out events f...

Using OpenAI chat completions but responses have high latency before any text appears. Need to stream the response token-by-token so users see text as it's generated, rather than waiting for the full ...

Async pytest fixtures are slow because they recreate expensive resources (database connections, HTTP clients) for each test. Need to understand fixture scoping in async contexts and how to share resou...

Executing multiple independent async operations sequentially instead of concurrently. Using `asyncio.gather()` but need better error handling when one task fails — gather continues other tasks even on...

Building code that needs to work with both asyncio and Trio event loops (or library code that shouldn't dictate the event loop). Also need nursery-style task cancellation that TaskGroup provides but w...

Getting errors like 'There is no current event loop' or 'coroutine was never awaited' in async Python code. Also confusion about when to use asyncio.run() vs await, and how to call async code from syn...

Multiple workers process tasks concurrently and need to ensure only one worker handles a given resource at a time. Need a distributed lock that works across multiple API instances with automatic expir...

Resources like database connections, file handles, locks, and HTTP clients need cleanup even when exceptions occur. Using try/finally everywhere is verbose. Need the context manager pattern for both c...