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14 Odd Python Libraries That Do Jobs You Would Hand Roll
Some small libraries do one strange job so well that writing it yourself starts to feel silly.
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Think of bloom filters, name sounds, checksums, map grids, domain names, config files and spell checks.
I ran every example below on Python 3.13 before writing about it.
Each entry has a full worked example and the real output.
After that comes a closer look at what the output shows, a realistic use, why it matters and what bit me while testing.
I note where a result was weaker than expected, because that is the part tutorials leave out.
Timings change from run to run, so treat the numbers as ballpark.
1. bloom-filter2
A set that answers maybe or definitely not, in a tiny amount of memory.
bloom-filter2 is a pure Python Bloom filter that you size by item count and error rate. The code is…
