78 articles tagged #Developer Tools
Writing datetime objects with xlsxwriter and getting ugly floats like 45123.708333 instead of a readable date? Here's why it happens, what the format object actually does, and how to fix it for good.
You set up data validation dropdowns in xlsxwriter, added sheet protection, opened the file in Excel — and the dropdowns are gone. Here's exactly why that happens and how to fix it without losing your protection settings.
OpenAI Codex CLI puts a terminal-native AI coding agent on your machine. Here's what it can actually do right now — from running code to editing files — and where it still falls short.
Your USB-C hub is cutting out mid-presentation or disconnecting your external drive at the worst moment. Here's how to track down exactly what's causing it and get a stable connection back fast.
You've called freeze_panes on every sheet, but when the file opens in Excel only some sheets are frozen—or none at all. Here's exactly why xlsxwriter silently drops the setting and how to fix it for good.
Paddle and Lemon Squeezy both promise to handle global tax compliance as your Merchant of Record — but their fee structures, quirks, and hidden limits are very different. Here's what actually happens when you ship real SaaS on each.
You define named ranges in xlsxwriter, open the file in Excel, and they're gone. This happens because of a subtle sequencing and scope issue — here's exactly how to fix it and verify your ranges persist.
You added an index, ran your query, and EXPLAIN ANALYZE still shows a sequential scan. Before you blame PostgreSQL, there are at least six specific reasons this happens — and each one has a clear fix.
xlsxwriter's autofit method sets row heights that look right in the preview but end up clipped or oversized in Excel. Here's why it happens and exactly how to calculate correct row heights yourself.
You've enabled text_wrap in xlsxwriter but Excel still cuts off your long strings mid-sentence. The culprit is almost always row height — xlsxwriter doesn't auto-expand it for you. Here's how to fix it properly.
Your xlsxwriter output looks fine until you try to SUM a column and get zero. The culprit is numbers stored as text — a silent bug that trips up SUM, AVERAGE, and nearly every Excel formula. Here's how to find and fix it.
You wrote the data, created the chart, and opened the file — only to find an empty chart frame staring back at you. Here are the exact reasons xlsxwriter charts go blank and how to fix each one.