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validate_environment() — langchain Function Reference

Architecture documentation for the validate_environment() function in cohere_rerank.py from the langchain codebase.

Function python LangChainCore ApiManagement

Entity Profile

Dependency Diagram

graph TD
  6011faf4_4634_1dee_7212_ffb2dbbc0a19["validate_environment()"]
  dddf6c97_e67e_69d4_e813_fd10af808b8f["CohereRerank"]
  6011faf4_4634_1dee_7212_ffb2dbbc0a19 -->|defined in| dddf6c97_e67e_69d4_e813_fd10af808b8f
  style 6011faf4_4634_1dee_7212_ffb2dbbc0a19 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain/langchain_classic/retrievers/document_compressors/cohere_rerank.py lines 42–60

    def validate_environment(cls, values: dict) -> Any:
        """Validate that api key and python package exists in environment."""
        if not values.get("client"):
            try:
                import cohere
            except ImportError as e:
                msg = (
                    "Could not import cohere python package. "
                    "Please install it with `pip install cohere`."
                )
                raise ImportError(msg) from e
            cohere_api_key = get_from_dict_or_env(
                values,
                "cohere_api_key",
                "COHERE_API_KEY",
            )
            client_name = values.get("user_agent", "langchain")
            values["client"] = cohere.Client(cohere_api_key, client_name=client_name)
        return values

Domain

Subdomains

Defined In

Source

Frequently Asked Questions

What does validate_environment() do?
validate_environment() is a function in the langchain codebase, defined in libs/langchain/langchain_classic/retrievers/document_compressors/cohere_rerank.py.
Where is validate_environment() defined?
validate_environment() is defined in libs/langchain/langchain_classic/retrievers/document_compressors/cohere_rerank.py at line 42.

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