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:
pickle— Python object serializationcopyreg— Registerpicklesupport functionsshelve— Python object persistencemarshal— Internal Python object serializationdbm— Interfaces to Unix “databases”sqlite3— DB-API 2.0 interface for SQLite databases- Tutorial
- Reference
- Module functions
- Module constants
LEGACY_TRANSACTION_CONTROLPARSE_COLNAMESPARSE_DECLTYPESSQLITE_OKSQLITE_DENYSQLITE_IGNOREapilevelparamstylesqlite_versionsqlite_version_infothreadsafetyversionversion_infoSQLITE_DBCONFIG_DEFENSIVESQLITE_DBCONFIG_DQS_DDLSQLITE_DBCONFIG_DQS_DMLSQLITE_DBCONFIG_ENABLE_FKEYSQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZERSQLITE_DBCONFIG_ENABLE_LOAD_EXTENSIONSQLITE_DBCONFIG_ENABLE_QPSGSQLITE_DBCONFIG_ENABLE_TRIGGERSQLITE_DBCONFIG_ENABLE_VIEWSQLITE_DBCONFIG_LEGACY_ALTER_TABLESQLITE_DBCONFIG_LEGACY_FILE_FORMATSQLITE_DBCONFIG_NO_CKPT_ON_CLOSESQLITE_DBCONFIG_RESET_DATABASESQLITE_DBCONFIG_TRIGGER_EQPSQLITE_DBCONFIG_TRUSTED_SCHEMASQLITE_DBCONFIG_WRITABLE_SCHEMA
- Connection objects
Connectioncursor()blobopen()commit()rollback()close()execute()executemany()executescript()create_function()create_aggregate()create_window_function()create_collation()interrupt()set_authorizer()set_progress_handler()set_trace_callback()enable_load_extension()load_extension()iterdump()backup()getlimit()setlimit()getconfig()setconfig()serialize()deserialize()autocommitin_transactionisolation_levelrow_factorytext_factorytotal_changes
- Cursor objects
- Row objects
- Blob objects
- PrepareProtocol objects
- Exceptions
- SQLite and Python types
- Default adapters and converters (deprecated)
- Command-line interface
- How-to guides
- How to use placeholders to bind values in SQL queries
- How to adapt custom Python types to SQLite values
- How to convert SQLite values to custom Python types
- Adapter and converter recipes
- How to use connection shortcut methods
- How to use the connection context manager
- How to work with SQLite URIs
- How to create and use row factories
- How to handle non-UTF-8 text encodings
- Explanation