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__init__() — langchain Function Reference

Architecture documentation for the __init__() function in parser.py from the langchain codebase.

Entity Profile

Dependency Diagram

graph TD
  f87de9e4_1fb1_3b6d_0ff5_d7195b8dd19f["__init__()"]
  7507a1db_f02a_e2de_50fc_37162a6893c2["QueryTransformer"]
  f87de9e4_1fb1_3b6d_0ff5_d7195b8dd19f -->|defined in| 7507a1db_f02a_e2de_50fc_37162a6893c2
  style f87de9e4_1fb1_3b6d_0ff5_d7195b8dd19f fill:#6366f1,stroke:#818cf8,color:#fff

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Source Code

libs/langchain/langchain_classic/chains/query_constructor/parser.py lines 81–101

    def __init__(
        self,
        *args: Any,
        allowed_comparators: Sequence[Comparator] | None = None,
        allowed_operators: Sequence[Operator] | None = None,
        allowed_attributes: Sequence[str] | None = None,
        **kwargs: Any,
    ):
        """Initialize the QueryTransformer.

        Args:
            *args: Positional arguments.
            allowed_comparators: Optional sequence of allowed comparators.
            allowed_operators: Optional sequence of allowed operators.
            allowed_attributes: Optional sequence of allowed attributes for comparators.
            **kwargs: Additional keyword arguments.
        """
        super().__init__(*args, **kwargs)
        self.allowed_comparators = allowed_comparators
        self.allowed_operators = allowed_operators
        self.allowed_attributes = allowed_attributes

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Frequently Asked Questions

What does __init__() do?
__init__() is a function in the langchain codebase, defined in libs/langchain/langchain_classic/chains/query_constructor/parser.py.
Where is __init__() defined?
__init__() is defined in libs/langchain/langchain_classic/chains/query_constructor/parser.py at line 81.

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