mirror of https://github.com/hwchase17/langchain
Pirate Speak Configurable Template (#13153)
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__pycache__
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MIT License
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Copyright (c) 2023 LangChain, Inc.
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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# pirate-speak-configurable
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This template converts user input into pirate speak. It shows how you can allow
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`configurable_alternatives` in the Runnable, allowing you to select from
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OpenAI, Anthropic, or Cohere as your LLM Provider in the playground (or via API).
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## Environment Setup
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Set the following environment variables to access all 3 configurable alternative
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model providers:
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- `OPENAI_API_KEY`
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- `ANTHROPIC_API_KEY`
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- `COHERE_API_KEY`
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## Usage
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To use this package, you should first have the LangChain CLI installed:
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```shell
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pip install -U langchain-cli
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```
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To create a new LangChain project and install this as the only package, you can do:
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```shell
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langchain app new my-app --package pirate-speak-configurable
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```
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If you want to add this to an existing project, you can just run:
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```shell
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langchain app add pirate-speak-configurable
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```
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And add the following code to your `server.py` file:
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```python
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from pirate_speak_configurable import chain as pirate_speak_configurable_chain
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add_routes(app, pirate_speak_configurable_chain, path="/pirate-speak-configurable")
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```
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(Optional) Let's now configure LangSmith.
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LangSmith will help us trace, monitor and debug LangChain applications.
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LangSmith is currently in private beta, you can sign up [here](https://smith.langchain.com/).
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If you don't have access, you can skip this section
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```shell
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export LANGCHAIN_TRACING_V2=true
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export LANGCHAIN_API_KEY=<your-api-key>
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export LANGCHAIN_PROJECT=<your-project> # if not specified, defaults to "default"
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```
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If you are inside this directory, then you can spin up a LangServe instance directly by:
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```shell
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langchain serve
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```
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This will start the FastAPI app with a server is running locally at
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[http://localhost:8000](http://localhost:8000)
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We can see all templates at [http://127.0.0.1:8000/docs](http://127.0.0.1:8000/docs)
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We can access the playground at [http://127.0.0.1:8000/pirate-speak-configurable/playground](http://127.0.0.1:8000/pirate-speak-configurable/playground)
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We can access the template from code with:
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```python
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from langserve.client import RemoteRunnable
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runnable = RemoteRunnable("http://localhost:8000/pirate-speak-configurable")
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```
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from pirate_speak_configurable.chain import chain
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__all__ = ["chain"]
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from langchain.chat_models import ChatAnthropic, ChatCohere, ChatOpenAI
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from langchain.prompts import ChatPromptTemplate
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from langchain.schema.runnable import ConfigurableField
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_prompt = ChatPromptTemplate.from_messages(
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[
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(
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"system",
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"Translate user input into pirate speak",
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),
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("human", "{text}"),
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]
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)
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_model = ChatOpenAI().configurable_alternatives(
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ConfigurableField(id="llm_provider"),
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default_key="openai",
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anthropic=ChatAnthropic(),
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cohere=ChatCohere(),
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)
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# if you update this, you MUST also update ../pyproject.toml
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# with the new `tool.langserve.export_attr`
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chain = _prompt | _model
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[tool.poetry]
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name = "pirate-speak-configurable"
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version = "0.0.1"
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description = ""
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authors = []
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readme = "README.md"
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[tool.poetry.dependencies]
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python = ">=3.8.1,<4.0"
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langchain = ">=0.0.313, <0.1"
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openai = "^0.28.1"
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anthropic = "^0.6.0"
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cohere = "^4.34"
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[tool.poetry.group.dev.dependencies]
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langchain-cli = ">=0.0.15"
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fastapi = "^0.104.0"
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sse-starlette = "^1.6.5"
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[tool.langserve]
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export_module = "pirate_speak_configurable"
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export_attr = "chain"
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[build-system]
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requires = ["poetry-core"]
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build-backend = "poetry.core.masonry.api"
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