binary – Tools for representing binary data to be stored in MongoDB

bson.binary.BINARY_SUBTYPE = 0

BSON binary subtype for binary data.

This is the default subtype for binary data.

New in version 1.5.

bson.binary.FUNCTION_SUBTYPE = 1

BSON binary subtype for functions.

New in version 1.5.

bson.binary.OLD_BINARY_SUBTYPE = 2

Old BSON binary subtype for binary data.

This is the old default subtype, the current default is BINARY_SUBTYPE.

New in version 1.7.

bson.binary.UUID_SUBTYPE = 4

BSON binary subtype for a UUID.

This is the new BSON binary subtype for UUIDs. The current default is OLD_UUID_SUBTYPE but will change to this in a future release.

Changed in version 2.1: Changed to subtype 4.

New in version 1.5.

bson.binary.OLD_UUID_SUBTYPE = 3

Old BSON binary subtype for a UUID.

uuid.UUID instances will automatically be encoded by bson using this subtype.

New in version 2.1.

bson.binary.MD5_SUBTYPE = 5

BSON binary subtype for an MD5 hash.

New in version 1.5.

bson.binary.USER_DEFINED_SUBTYPE = 128

BSON binary subtype for any user defined structure.

New in version 1.5.

class bson.binary.Binary(data[, subtype=BINARY_SUBTYPE])

Bases: str

Representation of BSON binary data.

This is necessary because we want to represent Python strings as the BSON string type. We need to wrap binary data so we can tell the difference between what should be considered binary data and what should be considered a string when we encode to BSON.

Raises TypeError if data is not an instance of str (bytes in python 3) or subtype is not an instance of int. Raises ValueError if subtype is not in [0, 256).

Note

In python 3 instances of Binary with subtype 0 will be decoded directly to bytes.

Parameters :
  • data: the binary data to represent
  • subtype (optional): the binary subtype to use
subtype

Subtype of this binary data.

class bson.binary.UUIDLegacy(obj)

Bases: bson.binary.Binary

UUID wrapper to support working with UUIDs stored as legacy BSON binary subtype 3.

>>> import uuid
>>> from bson.binary import Binary, UUIDLegacy, UUID_SUBTYPE
>>> my_uuid = uuid.uuid4()
>>> coll = db.test
>>> coll.uuid_subtype = UUID_SUBTYPE
>>> coll.insert({'uuid': Binary(my_uuid.bytes, 3)})
ObjectId('...')
>>> coll.find({'uuid': my_uuid}).count()
0
>>> coll.find({'uuid': UUIDLegacy(my_uuid)}).count()
1
>>> coll.find({'uuid': UUIDLegacy(my_uuid)})[0]['uuid']
UUID('...')
>>>
>>> # Convert from subtype 3 to subtype 4
>>> doc = coll.find_one({'uuid': UUIDLegacy(my_uuid)})
>>> coll.save(doc)
ObjectId('...')
>>> coll.find({'uuid': UUIDLegacy(my_uuid)}).count()
0
>>> coll.find({'uuid': {'$in': [UUIDLegacy(my_uuid), my_uuid]}}).count()
1
>>> coll.find_one({'uuid': my_uuid})['uuid']
UUID('...')

Raises TypeError if obj is not an instance of UUID.

Parameters :
  • obj: An instance of UUID.
uuid

UUID instance wrapped by this UUIDLegacy instance.

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