init() — langchain Function Reference

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

Function python AgentOrchestration ClassicChains

Entity Profile

AgentOrchestration→ ClassicChains→ __init__() — langchain Function Reference

Dependency Diagram

graph TD
  26714a04_6ec4_5020_1632_5abdeca3bb3f["__init__()"]
  73034b47_6ada_6cee_4b85_e74b6a3e14f1["Crawler"]
  26714a04_6ec4_5020_1632_5abdeca3bb3f -->|defined in| 73034b47_6ada_6cee_4b85_e74b6a3e14f1
  style 26714a04_6ec4_5020_1632_5abdeca3bb3f fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain/langchain_classic/chains/natbot/crawler.py lines 64–80

    def __init__(self) -> None:
        """Initialize the crawler."""
        try:
            from playwright.sync_api import sync_playwright
        except ImportError as e:
            msg = (
                "Could not import playwright python package. "
                "Please install it with `pip install playwright`."
            )
            raise ImportError(msg) from e
        self.browser: Browser = (
            sync_playwright().start().chromium.launch(headless=False)
        )
        self.page: Page = self.browser.new_page()
        self.page.set_viewport_size({"width": 1280, "height": 1080})
        self.page_element_buffer: dict[int, ElementInViewPort]
        self.client: CDPSession