get_num_tokens_from_messages() — langchain Function Reference

Architecture documentation for the get_num_tokens_from_messages() function in test_utils.py from the langchain codebase.

Function python LangChainCore MessageInterface calls 1 called by 1

Entity Profile

LangChainCore→ MessageInterface→ get_num_tokens_from_messages() — langchain Function Reference

Dependency Diagram

graph TD
  daeb82e7_d1da_efa6_b2c9_ba1828bc0d34["get_num_tokens_from_messages()"]
  efd1a281_0799_19b5_98b8_1d70ef32aedf["FakeTokenCountingModel"]
  daeb82e7_d1da_efa6_b2c9_ba1828bc0d34 -->|defined in| efd1a281_0799_19b5_98b8_1d70ef32aedf
  2f95ef9b_7f04_6df2_c869_01242bdf4482["test_trim_messages_bad_token_counter()"]
  2f95ef9b_7f04_6df2_c869_01242bdf4482 -->|calls| daeb82e7_d1da_efa6_b2c9_ba1828bc0d34
  341444f0_9d9a_88de_9a1e_da80115b274c["dummy_token_counter()"]
  daeb82e7_d1da_efa6_b2c9_ba1828bc0d34 -->|calls| 341444f0_9d9a_88de_9a1e_da80115b274c
  style daeb82e7_d1da_efa6_b2c9_ba1828bc0d34 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/tests/unit_tests/messages/test_utils.py lines 758–763

    def get_num_tokens_from_messages(
        self,
        messages: list[BaseMessage],
        tools: Sequence[dict[str, Any] | type | Callable | BaseTool] | None = None,
    ) -> int:
        return dummy_token_counter(messages)