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Advanced Polars: Going Big with Lazy Evaluation and Production Workflows (Part 3 of 3)
August 4, 2025
In Part 1, I hit pandas’ limits and turned to Polars for performance. In Part 2, I detailed how I migrated my pipeline and tackled common migration hurdles. Now, in this final part, I’ll show how I use Polars for large-scale data work: leveraging lazy…
In Part 1, I described how pandas reached its limit and how Polars solved my immediate performance headaches. In this part, I’ll dig into the practical steps I used to convert a real data pipeline from pandas to Polars. I’ll share what made the migration…
There I was at 2:47 AM on a Tuesday, staring at my laptop screen while my “quick data analysis” entered its fourth hour. The progress bar hadn’t moved in twenty minutes, my MacBook was making sounds that belonged in a server room, and I was…
You could say it all began back in June 1979. That’s when VisiCalc—the world’s first spreadsheet app—landed on the Apple II. Fast forward nearly forty years, and while VisiCalc is long gone, its grandchildren (hello, Excel!) are everywhere, especially in finance. I meet traders who…
