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Python from your first script to code you can maintain. Start here if you have never programmed.

Any category Programming7 Python 2 JavaScript 3 TypeScript 2
Any topics APIs and Integrations 2 Automation and Scripting 2 Object-Oriented Programming 2 Packaging and Dependencies 1 Performance Optimization 4 Programming Patterns 5 Testing and Debugging 1 Type Systems 2
Any level Advanced 2
Python APIs and Integrations Advanced Clear filters 2 results
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Running Many Requests at Once With asyncio.gather

asyncio.gather runs many waiting tasks at once in one thread and returns results in order. Avoid await in a loop and blocking calls, keep failures with return_exceptions=True, and limit concurrency with a Semaphore.

7 min read
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Speeding Up Many Downloads in Python With ThreadPoolExecutor

Downloads spend most of their time waiting. ThreadPoolExecutor lets many waits overlap: 20 half-second downloads in 2 seconds instead of 10. Handle failures with as_completed, pick a sensible worker count and respect the server.

6 min read