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What's Actually In This CSV? A Zero-Dep Python Profiler

What's Actually In This CSV? A Zero-Dep Python Profiler

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9 min read
Building a Furigana HTTP Service in Python: Why It's Not Just a Lookup Table

Building a Furigana HTTP Service in Python: Why It's Not Just a Lookup Table

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6 min read
Slugifying Japanese URLs Is Harder Than You Think — I Built a Focused CLI

Slugifying Japanese URLs Is Harder Than You Think — I Built a Focused CLI

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10 min read
A 150-Line FastAPI Service for 'Is Today a Holiday?'

A 150-Line FastAPI Service for 'Is Today a Holiday?'

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8 min read
Text Generation Before Transformers: Building a Markov Chain in 200 Lines of Python

Text Generation Before Transformers: Building a Markov Chain in 200 Lines of Python

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10 min read
Perceptual Image Diff Without NumPy — Building a Pillow-Only CLI

Perceptual Image Diff Without NumPy — Building a Pillow-Only CLI

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9 min read
When does this cron run next? Give it its own 70 MB container

When does this cron run next? Give it its own 70 MB container

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8 min read
How ULID Actually Works: Implementing the Codec in 60 Lines of Python

How ULID Actually Works: Implementing the Codec in 60 Lines of Python

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10 min read
Counting Moras: Why Your 5-7-5 Haiku Validator is Probably Wrong

Counting Moras: Why Your 5-7-5 Haiku Validator is Probably Wrong

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9 min read
Writing `tail -f | jq` That Doesn't Feel Like a Rube Goldberg Machine

Writing `tail -f | jq` That Doesn't Feel Like a Rube Goldberg Machine

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10 min read
When the Library IS the Product: A 200-Line FastAPI Wrapper for wordcloud

When the Library IS the Product: A 200-Line FastAPI Wrapper for wordcloud

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8 min read
Generating a Valid RSS Feed From Scratch in Stdlib Python

Generating a Valid RSS Feed From Scratch in Stdlib Python

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10 min read
How to Make Sense of a HAR File Without DevTools

How to Make Sense of a HAR File Without DevTools

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8 min read
Japanese Width Conversion Without Regex: Full↔Half ASCII, Katakana, and the Dakuten Merge Problem

Japanese Width Conversion Without Regex: Full↔Half ASCII, Katakana, and the Dakuten Merge Problem

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9 min read
Building a Hash Identifier Without ML — Just Rules, Scores, and Honesty About Ambiguity

Building a Hash Identifier Without ML — Just Rules, Scores, and Honesty About Ambiguity

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8 min read
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