Python gets introduced early in most engineering careers, often dismissed as "the scripting language" before engineers move on to whatever framework is fashionable. That framing does real damage. The control structures in Python are not just beginner material. They carry semantic weight, performance implications, and failure modes that show up in production systems years after … Read more
Every Python project I have touched in production has at least one place where an engineer reached for a third-party package when the standard library would have done the job cleanly. Sometimes that choice added a transitive dependency, a version pin, and a future maintenance burden. All for something itertools or collections could have handled … Read more
There is a reasonable chance you have written Python code to open an .xlsx file without ever asking what that file actually is. You called openpyxl.load_workbook(), iterated over rows, and moved on. That is fine. But understanding what lives on disk before any library touches it will change how you debug, optimize, and automate Excel-related … Read more
