Release Notes

What's New in 4.7

The PyMongo v4.7 release includes the following new features:

• Added the Hello.connection_id, CommandStartedEvent.server_connection_id, CommandSucceededEvent.server_connection_id, and CommandFailedEvent.server_connection_id properties.

• Added support for name suffixes for Key Management Service (KMS) providers for Client-Side Field Level Encryption (CSFLE). This feature requires pymongocrypt v1.9+ and libmongocrypt v1.9+. For more information, see the API documentation for the AutoEncryptionOpts class.

• Improved the performance of encoding BSON documents to JSON.

• The ClientEncryption.encrypt() and ClientEncryption.encrypt_expression() methods now allow the key_id argument to be passed in as a UUID Object.

• Inflating a RawBSONDocument object containing a Code value no longer causes an error.

• Fixed a bug in Python 3.12 where the error message RuntimeError: can't create new thread at interpreter shutdown could be written to stderr when a MongoClient thread starts as the Python interpreter is shutting down.

• Fixed a bug where Int64 instances could not always be encoded by orjson. Code like the following example now runs correctly:

>>> import orjson
>>> from bson import json_util
>>> orjson.dumps({'a': Int64(1)}, default=json_util.default, option=orjson.OPT_PASSTHROUGH_SUBCLASS)