langchain.document_transformers.doctran_text_extract.DoctranPropertyExtractor¶
class langchain.document_transformers.doctran_text_extract.DoctranPropertyExtractor(properties: List[dict], openai_api_key: Optional[str] = None, openai_api_model: Optional[str] = None)[source]¶
Extract properties from text documents using doctran.
Parameters
properties – A list of the properties to extract.
openai_api_key – OpenAI API key. Can also be specified via environment variable
OPENAI_API_KEY.
Example
from langchain.document_transformers import DoctranPropertyExtractor
properties = [
    {
        "name": "category",
        "description": "What type of email this is.",
        "type": "string",
        "enum": ["update", "action_item", "customer_feedback", "announcement", "other"],
        "required": True,
    },
    {
        "name": "mentions",
        "description": "A list of all people mentioned in this email.",
        "type": "array",
        "items": {
            "name": "full_name",
            "description": "The full name of the person mentioned.",
            "type": "string",
        },
        "required": True,
    },
    {
        "name": "eli5",
        "description": "Explain this email to me like I'm 5 years old.",
        "type": "string",
        "required": True,
    },
]
# Pass in openai_api_key or set env var OPENAI_API_KEY
property_extractor = DoctranPropertyExtractor(properties)
transformed_document = await qa_transformer.atransform_documents(documents)
Methods
__init__(properties[, openai_api_key, ...])