InMemoryBaseStore#

class langchain_core.stores.InMemoryBaseStore[source]#

In-memory implementation of the BaseStore using a dictionary.

Initialize an empty store.

Methods

`__init__`()	Initialize an empty store.
`amdelete`(keys)	Async delete the given keys and their associated values.
`amget`(keys)	Async get the values associated with the given keys.
`amset`(key_value_pairs)	Async set the values for the given keys.
`ayield_keys`([prefix])	Async get an async iterator over keys that match the given prefix.
`mdelete`(keys)	Delete the given keys and their associated values.
`mget`(keys)	Get the values associated with the given keys.
`mset`(key_value_pairs)	Set the values for the given keys.
`yield_keys`([prefix])	Get an iterator over keys that match the given prefix.

__init__() → None[source]#

Initialize an empty store.

async amdelete(keys: Sequence[str]) → None[source]#

Async delete the given keys and their associated values.

async amget(keys: Sequence[str]) → list[V | None][source]#

Async get the values associated with the given keys.

Parameters:: keys (Sequence[str]) – A sequence of keys.
Returns:: A sequence of optional values associated with the keys. If a key is not found, the corresponding value will be None.
Return type:: list[V | None]

async amset(key_value_pairs: Sequence[tuple[str, V]]) → None[source]#

Async set the values for the given keys.

Parameters:: key_value_pairs (Sequence[Tuple[str, V]]) – A sequence of key-value pairs.
Returns:: None
Return type:: None

async ayield_keys(prefix: str | None = None) → AsyncIterator[str][source]#

Async get an async iterator over keys that match the given prefix.

Parameters:: prefix (str, optional) – The prefix to match. Defaults to None.
Yields:: AsyncIterator[str] – An async iterator over keys that match the given prefix.
Return type:: AsyncIterator[str]

mdelete(keys: Sequence[str]) → None[source]#

Delete the given keys and their associated values.

mget(keys: Sequence[str]) → list[V | None][source]#

Get the values associated with the given keys.

Parameters:: keys (Sequence[str]) – A sequence of keys.
Returns:: A sequence of optional values associated with the keys. If a key is not found, the corresponding value will be None.
Return type:: list[V | None]

mset(key_value_pairs: Sequence[tuple[str, V]]) → None[source]#

Set the values for the given keys.

Parameters:: key_value_pairs (Sequence[Tuple[str, V]]) – A sequence of key-value pairs.
Returns:: None
Return type:: None

yield_keys(prefix: str | None = None) → Iterator[str][source]#

Get an iterator over keys that match the given prefix.

Parameters:: prefix (str, optional) – The prefix to match. Defaults to None.
Yields:: Iterator[str] – An iterator over keys that match the given prefix.
Return type:: Iterator[str]