class shelve.BsdDbShelf(dict, protocol=None, writeback=False, keyencoding='utf-8') A subclass of Shelf which exposes

class pickle.Unpickler(file, *, fix_imports=True, encoding="ASCII", errors="strict") This takes a binary file for reading a

persistent_id(obj) Do nothing by default. This exists so a subclass can override it. If

sqlite3.register_adapter(type, callable) Registers a callable to convert the custom Python type type into one of SQLite’s

dispatch_table A pickler object’s dispatch table is a registry of reduction functions of the kind which can be declared

execute(sql[, parameters]) Executes an SQL statement. The SQL statement may be parameterized (i. e. placeholders instead of

class pickle.Pickler(file, protocol=None, *, fix_imports=True) This takes a binary file for writing a pickle data stream.

dbm.open(file, flag='r', mode=0o666) Open the database file file and return a corresponding object.

object.__getstate__() Classes can further influence how their instances are pickled; if the class defines the method

lastrowid This read-only attribute provides the rowid of the last modified row. It is only set if you issued an INSERT