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12. Data Persistence
The modules described in this chapter support storing Python data in a persistent form on disk. The pickle and marshal modules can turn many Python data types into a stream of bytes and then recreate the objects from the bytes. The various DBM-related modules support a family of hash-based file formats that store a mapping of strings to other strings.
The list of modules described in this chapter is:
- 12.1. pickle — Python object serialization
- 12.2. copyreg — Register pickle support functions
- 12.3. shelve — Python object persistence
- 12.4. marshal — Internal Python object serialization
- 12.5. dbm — Interfaces to Unix “databases”
- 12.6. sqlite3 — DB-API 2.0 interface for SQLite databases