python3-bsddb3 6.2.6-4 (amd64 binary) in ubuntu focal

 This module provides a nearly complete wrapping of the Oracle/Sleepycat C API
 for the Database Environment, Database, Cursor, Sequence and Transaction
 objects, and each of these is exposed as a Python Type in the bsddb3.db
 module. The database objects can use various access methods: btree, hash,
 recno and queue. Complete support of Berkeley DB distributed transactions.
 Complete support for Berkeley DB Replication Manager. Complete support for
 Berkeley DB Base Replication. Support for RPC.