sqlite3 — DB-API 2.0 interface for SQLite databases
dbm — Interfaces to Unix “databases”
marshal — Internal Python object serialization
This module contains functions that can read and write Python values in a binary format. The format is specific to Python, but independent of machine architecture issues (e.g., you can write a Python value to a file on a PC, transport the file to a Sun, and read it back there). Details of the format are undocumented on purpose; it may change between Python versions (although it rarely does).
shelve — Python object persistence
copyreg — Register pickle support functions
pickle — Python object serialization