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chat.py — langchain Source File

Architecture documentation for chat.py, a python file in the langchain codebase. 17 imports, 0 dependents.

File python PromptManagement ChatTemplates 17 imports 2 functions 11 classes

Entity Profile

Dependency Diagram

graph LR
  d735cdf0_4dd6_b10d_3d65_7f753809639d["chat.py"]
  cccbe73e_4644_7211_4d55_e8fb133a8014["abc"]
  d735cdf0_4dd6_b10d_3d65_7f753809639d --> cccbe73e_4644_7211_4d55_e8fb133a8014
  cfe2bde5_180e_e3b0_df2b_55b3ebaca8e7["collections.abc"]
  d735cdf0_4dd6_b10d_3d65_7f753809639d --> cfe2bde5_180e_e3b0_df2b_55b3ebaca8e7
  b6ee5de5_719a_eeb5_1e11_e9c63bc22ef8["pathlib"]
  d735cdf0_4dd6_b10d_3d65_7f753809639d --> b6ee5de5_719a_eeb5_1e11_e9c63bc22ef8
  8e2034b7_ceb8_963f_29fc_2ea6b50ef9b3["typing"]
  d735cdf0_4dd6_b10d_3d65_7f753809639d --> 8e2034b7_ceb8_963f_29fc_2ea6b50ef9b3
  6e58aaea_f08e_c099_3cc7_f9567bfb1ae7["pydantic"]
  d735cdf0_4dd6_b10d_3d65_7f753809639d --> 6e58aaea_f08e_c099_3cc7_f9567bfb1ae7
  91721f45_4909_e489_8c1f_084f8bd87145["typing_extensions"]
  d735cdf0_4dd6_b10d_3d65_7f753809639d --> 91721f45_4909_e489_8c1f_084f8bd87145
  d758344f_537f_649e_f467_b9d7442e86df["langchain_core.messages"]
  d735cdf0_4dd6_b10d_3d65_7f753809639d --> d758344f_537f_649e_f467_b9d7442e86df
  a1369c93_b21f_2edb_d15c_ec3e09ac1e42["langchain_core.messages.base"]
  d735cdf0_4dd6_b10d_3d65_7f753809639d --> a1369c93_b21f_2edb_d15c_ec3e09ac1e42
  5b417886_56dd_6afa_13ab_a3cfc1dbcccd["langchain_core.prompt_values"]
  d735cdf0_4dd6_b10d_3d65_7f753809639d --> 5b417886_56dd_6afa_13ab_a3cfc1dbcccd
  8c01ac33_5694_26d8_6f82_8267af524e4e["langchain_core.prompts.base"]
  d735cdf0_4dd6_b10d_3d65_7f753809639d --> 8c01ac33_5694_26d8_6f82_8267af524e4e
  de8c88fa_966e_67e6_53fe_64406853c45a["langchain_core.prompts.dict"]
  d735cdf0_4dd6_b10d_3d65_7f753809639d --> de8c88fa_966e_67e6_53fe_64406853c45a
  31d6b1b2_d894_b51f_3188_b5cf8d9ca045["langchain_core.prompts.image"]
  d735cdf0_4dd6_b10d_3d65_7f753809639d --> 31d6b1b2_d894_b51f_3188_b5cf8d9ca045
  63bafb65_e3c1_8fca_d02a_332411ce701e["langchain_core.prompts.message"]
  d735cdf0_4dd6_b10d_3d65_7f753809639d --> 63bafb65_e3c1_8fca_d02a_332411ce701e
  c17bcf07_a2ef_b992_448f_5088d46a1e79["langchain_core.prompts.prompt"]
  d735cdf0_4dd6_b10d_3d65_7f753809639d --> c17bcf07_a2ef_b992_448f_5088d46a1e79
  style d735cdf0_4dd6_b10d_3d65_7f753809639d fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

"""Chat prompt template."""

from __future__ import annotations

from abc import ABC, abstractmethod
from collections.abc import Sequence
from pathlib import Path
from typing import (
    Annotated,
    Any,
    TypedDict,
    TypeVar,
    cast,
    overload,
)

from pydantic import (
    Field,
    PositiveInt,
    SkipValidation,
    model_validator,
)
from typing_extensions import Self, override

from langchain_core.messages import (
    AIMessage,
    AnyMessage,
    BaseMessage,
    ChatMessage,
    HumanMessage,
    SystemMessage,
    convert_to_messages,
)
from langchain_core.messages.base import get_msg_title_repr
from langchain_core.prompt_values import ChatPromptValue, ImageURL
from langchain_core.prompts.base import BasePromptTemplate
from langchain_core.prompts.dict import DictPromptTemplate
from langchain_core.prompts.image import ImagePromptTemplate
from langchain_core.prompts.message import (
    BaseMessagePromptTemplate,
)
from langchain_core.prompts.prompt import PromptTemplate
from langchain_core.prompts.string import (
    PromptTemplateFormat,
    StringPromptTemplate,
    get_template_variables,
)
from langchain_core.utils import get_colored_text
from langchain_core.utils.interactive_env import is_interactive_env


class MessagesPlaceholder(BaseMessagePromptTemplate):
    """Prompt template that assumes variable is already list of messages.

    A placeholder which can be used to pass in a list of messages.

    !!! example "Direct usage"

        ```python
        from langchain_core.prompts import MessagesPlaceholder
// ... (1425 more lines)

Domain

Subdomains

Functions

Classes

Dependencies

  • abc
  • collections.abc
  • langchain_core.messages
  • langchain_core.messages.base
  • langchain_core.prompt_values
  • langchain_core.prompts.base
  • langchain_core.prompts.dict
  • langchain_core.prompts.image
  • langchain_core.prompts.message
  • langchain_core.prompts.prompt
  • langchain_core.prompts.string
  • langchain_core.utils
  • langchain_core.utils.interactive_env
  • pathlib
  • pydantic
  • typing
  • typing_extensions

Source

Frequently Asked Questions

What does chat.py do?
chat.py is a source file in the langchain codebase, written in python. It belongs to the PromptManagement domain, ChatTemplates subdomain.
What functions are defined in chat.py?
chat.py defines 2 function(s): _convert_to_message_template, _create_template_from_message_type.
What does chat.py depend on?
chat.py imports 17 module(s): abc, collections.abc, langchain_core.messages, langchain_core.messages.base, langchain_core.prompt_values, langchain_core.prompts.base, langchain_core.prompts.dict, langchain_core.prompts.image, and 9 more.
Where is chat.py in the architecture?
chat.py is located at libs/core/langchain_core/prompts/chat.py (domain: PromptManagement, subdomain: ChatTemplates, directory: libs/core/langchain_core/prompts).

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