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graph_mermaid.py — langchain Source File

Architecture documentation for graph_mermaid.py, a python file in the langchain codebase. 14 imports, 0 dependents.

File python LangChainCore Runnables 14 imports 11 functions

Entity Profile

Dependency Diagram

graph LR
  c545ef44_a033_15ff_e016_18af37277247["graph_mermaid.py"]
  e6310202_b39e_ec9f_8b57_921c9c39c97d["asyncio"]
  c545ef44_a033_15ff_e016_18af37277247 --> e6310202_b39e_ec9f_8b57_921c9c39c97d
  d3750461_97f2_1730_4a69_37dae25b7cb2["base64"]
  c545ef44_a033_15ff_e016_18af37277247 --> d3750461_97f2_1730_4a69_37dae25b7cb2
  d33d86db_0d65_0c4a_5ba6_a863c29fa1c9["random"]
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  b7996424_637b_0b54_6edf_2e18e9c1a8bf["re"]
  c545ef44_a033_15ff_e016_18af37277247 --> b7996424_637b_0b54_6edf_2e18e9c1a8bf
  b95bdb4f_719f_67c2_db8f_4a67783a7d72["string"]
  c545ef44_a033_15ff_e016_18af37277247 --> b95bdb4f_719f_67c2_db8f_4a67783a7d72
  996b2db9_46dd_901f_f7eb_068bafab4b12["time"]
  c545ef44_a033_15ff_e016_18af37277247 --> 996b2db9_46dd_901f_f7eb_068bafab4b12
  04123c52_4735_47d9_961c_24bd9d5e87f9["urllib.parse"]
  c545ef44_a033_15ff_e016_18af37277247 --> 04123c52_4735_47d9_961c_24bd9d5e87f9
  cd5f8820_9b2e_4495_abb7_d76026ac826c["dataclasses"]
  c545ef44_a033_15ff_e016_18af37277247 --> cd5f8820_9b2e_4495_abb7_d76026ac826c
  927570d8_11a6_5c17_0f0d_80baae0c733e["pathlib"]
  c545ef44_a033_15ff_e016_18af37277247 --> 927570d8_11a6_5c17_0f0d_80baae0c733e
  feec1ec4_6917_867b_d228_b134d0ff8099["typing"]
  c545ef44_a033_15ff_e016_18af37277247 --> feec1ec4_6917_867b_d228_b134d0ff8099
  a869785a_d507_1688_0b32_0ec94043975a["yaml"]
  c545ef44_a033_15ff_e016_18af37277247 --> a869785a_d507_1688_0b32_0ec94043975a
  8f87b7e3_86aa_987c_2f8b_0f1fe7c9f8c8["langchain_core.runnables.graph"]
  c545ef44_a033_15ff_e016_18af37277247 --> 8f87b7e3_86aa_987c_2f8b_0f1fe7c9f8c8
  a83cf0c6_37ab_ef90_8783_e7ae0273a0a0["requests"]
  c545ef44_a033_15ff_e016_18af37277247 --> a83cf0c6_37ab_ef90_8783_e7ae0273a0a0
  616d7184_c2fd_b6a2_9573_38e9284782d6["pyppeteer"]
  c545ef44_a033_15ff_e016_18af37277247 --> 616d7184_c2fd_b6a2_9573_38e9284782d6
  style c545ef44_a033_15ff_e016_18af37277247 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

"""Mermaid graph drawing utilities."""

from __future__ import annotations

import asyncio
import base64
import random
import re
import string
import time
import urllib.parse
from dataclasses import asdict
from pathlib import Path
from typing import TYPE_CHECKING, Any, Literal, cast

import yaml

from langchain_core.runnables.graph import (
    CurveStyle,
    MermaidDrawMethod,
    NodeStyles,
)

if TYPE_CHECKING:
    from langchain_core.runnables.graph import Edge, Node


try:
    import requests

    _HAS_REQUESTS = True
except ImportError:
    _HAS_REQUESTS = False

try:
    from pyppeteer import launch  # type: ignore[import-not-found]

    _HAS_PYPPETEER = True
except ImportError:
    _HAS_PYPPETEER = False

MARKDOWN_SPECIAL_CHARS = "*_`"


def draw_mermaid(
    nodes: dict[str, Node],
    edges: list[Edge],
    *,
    first_node: str | None = None,
    last_node: str | None = None,
    with_styles: bool = True,
    curve_style: CurveStyle = CurveStyle.LINEAR,
    node_styles: NodeStyles | None = None,
    wrap_label_n_words: int = 9,
    frontmatter_config: dict[str, Any] | None = None,
) -> str:
    """Draws a Mermaid graph using the provided graph data.

    Args:
        nodes: List of node ids.
// ... (439 more lines)

Domain

Subdomains

Functions

Dependencies

  • asyncio
  • base64
  • dataclasses
  • langchain_core.runnables.graph
  • pathlib
  • pyppeteer
  • random
  • re
  • requests
  • string
  • time
  • typing
  • urllib.parse
  • yaml

Source

Frequently Asked Questions

What does graph_mermaid.py do?
graph_mermaid.py is a source file in the langchain codebase, written in python. It belongs to the LangChainCore domain, Runnables subdomain.
What functions are defined in graph_mermaid.py?
graph_mermaid.py defines 11 function(s): _HAS_PYPPETEER, _HAS_REQUESTS, _generate_mermaid_graph_styles, _render_mermaid_using_api, _render_mermaid_using_pyppeteer, _to_safe_id, draw_mermaid, draw_mermaid_png, langchain_core, pyppeteer, and 1 more.
What does graph_mermaid.py depend on?
graph_mermaid.py imports 14 module(s): asyncio, base64, dataclasses, langchain_core.runnables.graph, pathlib, pyppeteer, random, re, and 6 more.
Where is graph_mermaid.py in the architecture?
graph_mermaid.py is located at libs/core/langchain_core/runnables/graph_mermaid.py (domain: LangChainCore, subdomain: Runnables, directory: libs/core/langchain_core/runnables).

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