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graph.py — langchain Source File

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

File python LangChainCore Runnables 14 imports 6 functions 9 classes

Entity Profile

Dependency Diagram

graph LR
  81a6280b_4752_84db_f1fa_1a3b8040d481["graph.py"]
  589b2e2f_c593_ed0a_7906_df4ca371d542["inspect"]
  81a6280b_4752_84db_f1fa_1a3b8040d481 --> 589b2e2f_c593_ed0a_7906_df4ca371d542
  9cec496e_5583_62d2_b4a1_469bbdaf601f["collections"]
  81a6280b_4752_84db_f1fa_1a3b8040d481 --> 9cec496e_5583_62d2_b4a1_469bbdaf601f
  cd5f8820_9b2e_4495_abb7_d76026ac826c["dataclasses"]
  81a6280b_4752_84db_f1fa_1a3b8040d481 --> cd5f8820_9b2e_4495_abb7_d76026ac826c
  7ec08df6_88bd_07ab_d50f_0d4c4e429b7e["enum"]
  81a6280b_4752_84db_f1fa_1a3b8040d481 --> 7ec08df6_88bd_07ab_d50f_0d4c4e429b7e
  feec1ec4_6917_867b_d228_b134d0ff8099["typing"]
  81a6280b_4752_84db_f1fa_1a3b8040d481 --> feec1ec4_6917_867b_d228_b134d0ff8099
  02f66451_d2a9_e7c3_9765_c3a7594721ad["uuid"]
  81a6280b_4752_84db_f1fa_1a3b8040d481 --> 02f66451_d2a9_e7c3_9765_c3a7594721ad
  e082ede2_868f_7149_8977_a2af7e5aeb38["langchain_core.load.serializable"]
  81a6280b_4752_84db_f1fa_1a3b8040d481 --> e082ede2_868f_7149_8977_a2af7e5aeb38
  15b6f2ac_8a3b_5719_0e4d_4652995195ed["langchain_core.runnables.base"]
  81a6280b_4752_84db_f1fa_1a3b8040d481 --> 15b6f2ac_8a3b_5719_0e4d_4652995195ed
  314b1cc1_bd2e_bf43_4c2f_8c292c35f3e7["langchain_core.utils.pydantic"]
  81a6280b_4752_84db_f1fa_1a3b8040d481 --> 314b1cc1_bd2e_bf43_4c2f_8c292c35f3e7
  2bf6d401_816d_d011_3b05_a6114f55ff58["collections.abc"]
  81a6280b_4752_84db_f1fa_1a3b8040d481 --> 2bf6d401_816d_d011_3b05_a6114f55ff58
  dd5e7909_a646_84f1_497b_cae69735550e["pydantic"]
  81a6280b_4752_84db_f1fa_1a3b8040d481 --> dd5e7909_a646_84f1_497b_cae69735550e
  d40a481e_a2a3_424d_2d6d_f24c448f6e9c["langchain_core.runnables.graph_ascii"]
  81a6280b_4752_84db_f1fa_1a3b8040d481 --> d40a481e_a2a3_424d_2d6d_f24c448f6e9c
  6ddd15a0_3f9f_4cd8_0f72_be6ca4d23064["langchain_core.runnables.graph_png"]
  81a6280b_4752_84db_f1fa_1a3b8040d481 --> 6ddd15a0_3f9f_4cd8_0f72_be6ca4d23064
  5078e88d_7ff8_afba_5113_31a55cc87fa6["langchain_core.runnables.graph_mermaid"]
  81a6280b_4752_84db_f1fa_1a3b8040d481 --> 5078e88d_7ff8_afba_5113_31a55cc87fa6
  style 81a6280b_4752_84db_f1fa_1a3b8040d481 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

"""Graph used in `Runnable` objects."""

from __future__ import annotations

import inspect
from collections import defaultdict
from dataclasses import dataclass, field
from enum import Enum
from typing import (
    TYPE_CHECKING,
    Any,
    NamedTuple,
    Protocol,
    TypedDict,
    overload,
)
from uuid import UUID, uuid4

from langchain_core.load.serializable import to_json_not_implemented
from langchain_core.runnables.base import Runnable, RunnableSerializable
from langchain_core.utils.pydantic import _IgnoreUnserializable, is_basemodel_subclass

if TYPE_CHECKING:
    from collections.abc import Callable, Sequence

    from pydantic import BaseModel

    from langchain_core.runnables.base import Runnable as RunnableType


class Stringifiable(Protocol):
    """Protocol for objects that can be converted to a string."""

    def __str__(self) -> str:
        """Convert the object to a string."""


class LabelsDict(TypedDict):
    """Dictionary of labels for nodes and edges in a graph."""

    nodes: dict[str, str]
    """Labels for nodes."""
    edges: dict[str, str]
    """Labels for edges."""


def is_uuid(value: str) -> bool:
    """Check if a string is a valid UUID.

    Args:
        value: The string to check.

    Returns:
        `True` if the string is a valid UUID, `False` otherwise.
    """
    try:
        UUID(value)
    except ValueError:
        return False
    return True
// ... (680 more lines)

Domain

Subdomains

Functions

Classes

Dependencies

  • collections
  • collections.abc
  • dataclasses
  • enum
  • inspect
  • langchain_core.load.serializable
  • langchain_core.runnables.base
  • langchain_core.runnables.graph_ascii
  • langchain_core.runnables.graph_mermaid
  • langchain_core.runnables.graph_png
  • langchain_core.utils.pydantic
  • pydantic
  • typing
  • uuid

Source

Frequently Asked Questions

What does graph.py do?
graph.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.py?
graph.py defines 6 function(s): _first_node, _last_node, collections, is_uuid, node_data_json, node_data_str.
What does graph.py depend on?
graph.py imports 14 module(s): collections, collections.abc, dataclasses, enum, inspect, langchain_core.load.serializable, langchain_core.runnables.base, langchain_core.runnables.graph_ascii, and 6 more.
Where is graph.py in the architecture?
graph.py is located at libs/core/langchain_core/runnables/graph.py (domain: LangChainCore, subdomain: Runnables, directory: libs/core/langchain_core/runnables).

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