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Langchain Example Updates (#199)

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Dave 2 years ago committed by GitHub
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8 changed files with 22 additions and 376 deletions
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  1. 1
      .gitignore
  2. 2
      examples/langchain/PY.Dockerfile
  3. 2
      examples/langchain/README.md
  4. 376
      examples/langchain/langchainjs-localai-example/package-lock.json
  5. 2
      examples/langchain/langchainjs-localai-example/package.json
  6. 11
      examples/langchain/langchainpy-localai-example/full_demo.py
  7. 2
      examples/langchain/langchainpy-localai-example/requirements.txt
  8. 2
      examples/langchain/models/gpt-3.5-turbo.yaml

1
.gitignore vendored
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@ -2,6 +2,7 @@
go-llama
go-gpt4all-j
go-gpt2
go-rwkv
# LocalAI build binary
LocalAI

2
examples/langchain/PY.Dockerfile
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@ -2,4 +2,4 @@ FROM python:3.10-bullseye
COPY ./langchainpy-localai-example /app
WORKDIR /app
RUN pip install --no-cache-dir -r requirements.txt
ENTRYPOINT [ "python", "./simple_demo.py" ];
ENTRYPOINT [ "python", "./full_demo.py" ];

2
examples/langchain/README.md
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@ -27,4 +27,4 @@ docker-compose --profile py up --build
## Copyright
Some of the example code in index.mts is adapted from the langchainjs project and is Copyright (c) Harrison Chase. Used under the terms of the MIT license, as is the remainder of this code.
Some of the example code in index.mts and full_demo.py is adapted from the langchainjs project and is Copyright (c) Harrison Chase. Used under the terms of the MIT license, as is the remainder of this code.

376
examples/langchain/langchainjs-localai-example/package-lock.json generated
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"version": "4.5.0",
"resolved": "https://registry.npmjs.org/entities/-/entities-4.5.0.tgz",
"integrity": "sha512-V0hjH4dGPh9Ao5p0MoRY6BVqtwCjhz6vI5LT8AJ55H+4g9/4vbHx1I54fS0XuclLhDHArPQCiMjDxjaL8fPxhw==",
"optional": true,
"peer": true
},
"escalade": {
"version": "3.1.1",
"resolved": "https://registry.npmjs.org/escalade/-/escalade-3.1.1.tgz",
@ -1864,19 +1525,6 @@
"resolved": "https://registry.npmjs.org/highlight.js/-/highlight.js-10.7.3.tgz",
"integrity": "sha512-tzcUFauisWKNHaRkN4Wjl/ZA07gENAjFl3J/c480dprkGTg5EQstgaNFqBfUqCq54kZRIEcreTsAgF/m2quD7A=="
},
"htmlparser2": {
"version": "8.0.2",
"resolved": "https://registry.npmjs.org/htmlparser2/-/htmlparser2-8.0.2.tgz",
"integrity": "sha512-GYdjWKDkbRLkZ5geuHs5NY1puJ+PXwP7+fHPRz06Eirsb9ugf6d8kkXav6ADhcODhFFPMIXyxkxSuMf3D6NCFA==",
"optional": true,
"peer": true,
"requires": {
"domelementtype": "^2.3.0",
"domhandler": "^5.0.3",
"domutils": "^3.0.1",
"entities": "^4.4.0"
}
},
"ieee754": {
"version": "1.2.1",
"resolved": "https://registry.npmjs.org/ieee754/-/ieee754-1.2.1.tgz",
@ -2024,16 +1672,6 @@
"whatwg-url": "^5.0.0"
}
},
"nth-check": {
"version": "2.1.1",
"resolved": "https://registry.npmjs.org/nth-check/-/nth-check-2.1.1.tgz",
"integrity": "sha512-lqjrjmaOoAnWfMmBPL+XNnynZh2+swxiX3WUE0s4yEHI6m+AwrK2UZOimIRl3X/4QctVqS8AiZjFqyOGrMXb/w==",
"optional": true,
"peer": true,
"requires": {
"boolbase": "^1.0.0"
}
},
"num-sort": {
"version": "2.1.0",
"resolved": "https://registry.npmjs.org/num-sort/-/num-sort-2.1.0.tgz",

2
examples/langchain/langchainjs-localai-example/package.json
Unescape View File

@ -11,7 +11,7 @@
"author": "dave@gray101.com",
"license": "MIT",
"devDependencies": {
"@types/node": "^18.16.3",
"@types/node": "^18.16.4",
"typescript": "^5.0.4"
},
"dependencies": {

11
examples/langchain/langchainpy-localai-example/full_demo.py
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@ -1,4 +1,6 @@
import os
import logging
from langchain.chat_models import ChatOpenAI
from langchain import PromptTemplate, LLMChain
from langchain.prompts.chat import (
@ -13,6 +15,9 @@ from langchain.schema import (
SystemMessage
)
# This logging incantation makes it easy to see that you're actually reaching your LocalAI instance rather than OpenAI.
logging.basicConfig(level=logging.DEBUG)
print('Langchain + LocalAI PYTHON Tests')
base_path = os.environ.get('OPENAI_API_BASE', 'http://api:8080/v1')
@ -24,7 +29,7 @@ chat = ChatOpenAI(temperature=0, openai_api_base=base_path, openai_api_key=key,
print("Created ChatOpenAI for ", chat.model_name)
template = "You are a helpful assistant that translates {input_language} to {output_language}."
template = "You are a helpful assistant that translates {input_language} to {output_language}. The next message will be a sentence in {input_language}. Respond ONLY with the translation in {output_language}. Do not respond in {input_language}!"
system_message_prompt = SystemMessagePromptTemplate.from_template(template)
human_template = "{text}"
human_message_prompt = HumanMessagePromptTemplate.from_template(human_template)
@ -34,6 +39,8 @@ chat_prompt = ChatPromptTemplate.from_messages([system_message_prompt, human_mes
print("ABOUT to execute")
# get a chat completion from the formatted messages
chat(chat_prompt.format_prompt(input_language="English", output_language="French", text="I love programming.").to_messages())
response = chat(chat_prompt.format_prompt(input_language="English", output_language="French", text="I love programming.").to_messages())
print(response)
print(".");

2
examples/langchain/langchainpy-localai-example/requirements.txt
Unescape View File

@ -10,7 +10,7 @@ debugpy==1.6.7
frozenlist==1.3.3
greenlet==2.0.2
idna==3.4
langchain==0.0.157
langchain==0.0.159
marshmallow==3.19.0
marshmallow-enum==1.5.1
multidict==6.0.4

2
examples/langchain/models/gpt-3.5-turbo.yaml
Unescape View File

@ -15,4 +15,4 @@ roles:
backend: "gptj"
template:
completion: completion
chat: completion # gpt4all
chat: gpt4all
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