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__len__() — langchain Function Reference

Architecture documentation for the __len__() function in iter.py from the langchain codebase.

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Dependency Diagram

graph TD
  b47a5750_5c8d_fd6f_a643_abc6f525eca5["__len__()"]
  4f5b77f2_09bd_e403_0ad5_cd7cd96465d1["Tee"]
  b47a5750_5c8d_fd6f_a643_abc6f525eca5 -->|defined in| 4f5b77f2_09bd_e403_0ad5_cd7cd96465d1
  style b47a5750_5c8d_fd6f_a643_abc6f525eca5 fill:#6366f1,stroke:#818cf8,color:#fff

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Source Code

libs/core/langchain_core/utils/iter.py lines 156–158

    def __len__(self) -> int:
        """Return the number of child iterators."""
        return len(self._children)

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Frequently Asked Questions

What does __len__() do?
__len__() is a function in the langchain codebase, defined in libs/core/langchain_core/utils/iter.py.
Where is __len__() defined?
__len__() is defined in libs/core/langchain_core/utils/iter.py at line 156.

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