LangChain Reference home pageLangChain ReferenceLangChain Reference
  • GitHub
  • Main Docs
Deep Agents
LangChain
LangGraph
Integrations
LangSmith
  • Overview
    • Overview
    • Caches
    • Callbacks
    • Documents
    • Document loaders
    • Embeddings
    • Exceptions
    • Language models
    • Serialization
    • Output parsers
    • Prompts
    • Rate limiters
    • Retrievers
    • Runnables
    • Utilities
    • Vector stores
    MCP Adapters
    Standard Tests
    Text Splitters
    ⌘I

    LangChain Assistant

    Ask a question to get started

    Enter to send•Shift+Enter new line

    Menu

    OverviewCachesCallbacksDocumentsDocument loadersEmbeddingsExceptionsLanguage modelsSerializationOutput parsersPromptsRate limitersRetrieversRunnablesUtilitiesVector stores
    MCP Adapters
    Standard Tests
    Text Splitters
    Language
    Theme
    Pythonlangchain-corerunnablesgraphGraphdraw_png
    Method●Since v0.1

    draw_png

    Draw the graph as a PNG image.

    Copy
    draw_png(
      self,
      output_file_path: str | None = None,
      fontname: str | None = None,
      labels: LabelsDict | None = None
    ) -> bytes | None

    Parameters

    NameTypeDescription
    output_file_pathstr | None
    Default:None

    The path to save the image to. If None, the image is not saved.

    fontnamestr | None
    Default:None

    The name of the font to use.

    labelsLabelsDict | None
    Default:None

    Optional labels for nodes and edges in the graph. Defaults to None.

    View source on GitHub