Python for Excel Users, Part 3: Merging Datasets and Replacing Your VLOOKUPs
VLOOKUP and XLOOKUP, but for files that don't fit in memory, joins on multiple keys, and many-to-many matches that VLOOKUP simply can't do.
CSV
// 3 postsPosts about CSV.
CSV posts
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Python for Excel Users, Part 2: Grouping, Aggregating, and Replacing Your SUMIFS
SUMIFS and COUNTIFS are great — until your data has 500,000 rows and Excel is grinding. Part 2 shows how to do everything your SUMIFS does, but with pandas groupby — faster, more flexible, and on d…
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Python for Excel Users, Part 1: Reading and Filtering Your First Real Dataset
This isn't 'what is a variable' Python. This is: you have a CSV that's too big for Excel, you need it filtered by date and category, and you need the result saved as a clean file. Part 1 covers exa…