langchain_postgres.checkpoint.PickleCheckpointSerializer

class langchain_postgres.checkpoint.PickleCheckpointSerializer[source]

Use the pickle module to serialize and deserialize objects.

This serializer uses the pickle module to serialize and deserialize objects.

While pickling can serialize a wide range of Python objects, it may fail de-serializable objects upon updates of the Python version or the python environment (e.g., the object’s class definition changes in LangGraph).

Security Warning: The pickle module can deserialize malicious payloads,

only use this serializer with trusted data; e.g., data that you have serialized yourself and can guarantee the integrity of.

Methods

__init__()

dumps(obj)

Serialize an object to bytes.

loads(data)

Deserialize an object from bytes.

__init__()
dumps(obj: Checkpoint) bytes[source]

Serialize an object to bytes.

Parameters

obj (Checkpoint) –

Return type

bytes

loads(data: bytes) Checkpoint[source]

Deserialize an object from bytes.

Parameters

data (bytes) –

Return type

Checkpoint