Category: Python Tips
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pytest vs unittest vs hypothesis: Coverage Blind Spots
100% line coverage still ships bugs. See how pytest, unittest, and hypothesis expose different edge cases โ with the exact inputs each framework missed.
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asyncio.gather vs as_completed vs TaskGroup: 3 Patterns
gather() killed 49 successful API calls when one failed. Here's when to use as_completed() and TaskGroup instead โ with real latency numbers.
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Pydantic vs dataclass Performance: 7x Slower Validation
Pydantic vs dataclass speed benchmark reveals validation overhead. See when 7x slower matters and choose the right tool for your Python project.
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Python match-case: 7 Patterns That Beat if-elif Chains
Master Python's match-case with 7 powerful patterns including guard clauses, wildcard matching, and structural destructuring for cleaner code
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pip vs conda vs Poetry: Speed & Reliability Benchmarks
Compare pip, conda, and Poetry performance across install speed, disk usage, and reliability. Real benchmarks reveal surprising winners for each metric.
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Python slots=True: 8x Memory Cut in 10M Dataclass Instances
Cut Python memory usage by 87% with slots=True in dataclasses. Real benchmark: 10 million instances, 8x efficiency gain, zero code complexity added.