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NoLock Class — langchain Architecture

Architecture documentation for the NoLock class in aiter.py from the langchain codebase.

Class python

Entity Profile

Dependency Diagram

graph TD
  cae90db4_a76e_7535_df5b_8189c49d5413["NoLock"]
  b33566b6_8971_bdf8_5db2_dd5a13740a1f["aiter.py"]
  cae90db4_a76e_7535_df5b_8189c49d5413 -->|defined in| b33566b6_8971_bdf8_5db2_dd5a13740a1f
  05e82844_1457_54bd_d60a_7d9116a83aa3["__aenter__()"]
  cae90db4_a76e_7535_df5b_8189c49d5413 -->|method| 05e82844_1457_54bd_d60a_7d9116a83aa3
  1acaafcc_2e86_c4cb_231e_12f6c9d55251["__aexit__()"]
  cae90db4_a76e_7535_df5b_8189c49d5413 -->|method| 1acaafcc_2e86_c4cb_231e_12f6c9d55251

Relationship Graph

Source Code

libs/core/langchain_core/utils/aiter.py lines 87–100

class NoLock:
    """Dummy lock that provides the proper interface but no protection."""

    async def __aenter__(self) -> None:
        """Do nothing."""

    async def __aexit__(
        self,
        exc_type: type[BaseException] | None,
        exc_val: BaseException | None,
        exc_tb: TracebackType | None,
    ) -> bool:
        """Return False, exception not suppressed."""
        return False

Defined In

Source

Frequently Asked Questions

What is the NoLock class?
NoLock is a class in the langchain codebase, defined in libs/core/langchain_core/utils/aiter.py.
Where is NoLock defined?
NoLock is defined in libs/core/langchain_core/utils/aiter.py at line 87.

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