MaGe Linux Operations

Jul 15, 2024 · Fundamentals

Why Python’s ‘is’ Returns False for Identical Numbers and Other Gotchas

This article explains why Python’s is operator can yield False for seemingly identical integers, how integer caching and code‑block reuse affect object identity, common pitfalls with re.sub’s count parameter, the character‑based behavior of lstrip, and why list multiplication creates shared references.