Satori Komeiji's Programming Classroom

Aug 13, 2024 · Fundamentals

How Does a Python dict Key Map to an Index and How Are Collisions Resolved?

The article explains how Python maps a dict key to a hash‑table slot, the two classic collision‑resolution strategies (separate chaining and open addressing), why Python uses an iterative probing function, and walks through the core C functions that perform the lookup and slot‑finding logic.