BaseMemory#
- class langchain_core.memory.BaseMemory[source]#
Bases:
Serializable
,ABC
Abstract base class for memory in Chains.
- Memory refers to state in Chains. Memory can be used to store information about
past executions of a Chain and inject that information into the inputs of future executions of the Chain. For example, for conversational Chains Memory can be used to store conversations and automatically add them to future model prompts so that the model has the necessary context to respond coherently to the latest input.
Example
class SimpleMemory(BaseMemory): memories: Dict[str, Any] = dict() @property def memory_variables(self) -> List[str]: return list(self.memories.keys()) def load_memory_variables(self, inputs: Dict[str, Any]) -> Dict[str, str]: return self.memories def save_context(self, inputs: Dict[str, Any], outputs: Dict[str, str]) -> None: pass def clear(self) -> None: pass
- async aload_memory_variables(inputs: Dict[str, Any]) Dict[str, Any] [source]#
Async return key-value pairs given the text input to the chain.
- Parameters:
inputs (Dict[str, Any]) – The inputs to the chain.
- Returns:
A dictionary of key-value pairs.
- Return type:
Dict[str, Any]
- async asave_context(inputs: Dict[str, Any], outputs: Dict[str, str]) None [source]#
Async save the context of this chain run to memory.
- Parameters:
inputs (Dict[str, Any]) – The inputs to the chain.
outputs (Dict[str, str]) – The outputs of the chain.
- Return type:
None
- abstract load_memory_variables(inputs: Dict[str, Any]) Dict[str, Any] [source]#
Return key-value pairs given the text input to the chain.
- Parameters:
inputs (Dict[str, Any]) – The inputs to the chain.
- Returns:
A dictionary of key-value pairs.
- Return type:
Dict[str, Any]
- abstract save_context(inputs: Dict[str, Any], outputs: Dict[str, str]) None [source]#
Save the context of this chain run to memory.
- Parameters:
inputs (Dict[str, Any]) – The inputs to the chain.
outputs (Dict[str, str]) – The outputs of the chain.
- Return type:
None
- abstract property memory_variables: List[str]#
The string keys this memory class will add to chain inputs.