"the slow-but-simple implementation in module dbm.dumb will be used" No kidding. https://github.com/python/cpython/blob/main/Lib/dbm/dumb.py https://github.co

"the slow-but-simple implementation in module dbm.dumb will be used" No kidding. https://github.com/python/cpython/blob/main/Lib/dbm/dumb.py https://github.com/python/cpython/blob/main/Lib/dbm/dumb.py It uses a text file to store keys and pointers into a binary file for values. It works .. most of the time .. but yeah, that's not going to win any speed awards.