Extracting week numbers from dates matches across 10 systems, but converting back from week numbers splits into 4 patterns. 6 traps of ISO week numbers

Week numbers like "the 41st week of 2026" appear in sales aggregation units, log rounding units, and even in sprint names.

What is Altair? Why its declarative nature makes code concise and readable, and when to use it

IntroductionWhen drawing graphs in Python, it is common to use a step-by-step approach: setting axes, adjusting legends, ...