llama-create tool

use

create project

npx create-llama@latest

✔ Which template would you like to use? › Chat
✔ Which framework would you like to use? › FastAPI (Python)
✔ Would you like to generate a NextJS frontend for your FastAPI (Python) backend? … No

✔ Which model would you like to use? › gpt-3.5-turbo-0125
✔ Which embedding model would you like to use? › text-embedding-3-small
  
✔ Which data source would you like to use? › Use an example PDF
✔ Would you like to add another data source? › No
  
✔ Would you like to use LlamaParse (improved parser for RAG - requires API key)? … yes
✔ Please provide your LlamaIndex Cloud API key (leave blank to skip): … 
  
✔ Would you like to use a vector database? › PostgreSQL

Create a database in SupaBase and obtain the Migration connection string

Fill in the.env file

Switch to Conda Environment

Switch to proxy

Update the version of the library inpyproject.toml

[tool]
[tool.poetry]
name = "app"
version = "0.1.0"
description = ""
authors = [ "Marcus Schiesser <mail@marcusschiesser.de>" ]
readme = "README.md"

[tool.poetry.dependencies]
python = "^3.11,<3.12"
fastapi = "^0.110.1"
python-dotenv = "^1.0.0"
llama-index = "0.10.28"
llama-index-core = "0.10.28"
llama-index-agent-openai = "0.2.2"

[tool.poetry.dependencies.uvicorn]
extras = [ "standard" ]
version = "^0.29.0"

[tool.poetry.dependencies.llama-index-vector-stores-postgres]
version = "^0.1.1"

[tool.poetry.dependencies.llama-index-vector-stores-pinecone]
version = "^0.1.3"

[tool.poetry.dependencies.docx2txt]
version = "^0.8"

[build-system]
requires = [ "poetry-core" ]
build-backend = "poetry.core.masonry.api"

Package manager

Use poetry, but poetry install always uses poetry's virtual Environment, which is prone to problems.

Use pip to install and there will be no errors.

pip install .

Generate Index of Matrix

python app/engine/generate.py

Errors occur when using text-embedding-3-large.

  File "/Users/yanghaibin/anaconda3/envs/LI311-b/lib/python3.11/site-packages/pgvector/utils/__init__.py", line 35, in to_db
    raise ValueError('expected %d dimensions, not %d' % (dim, len(value)))
sqlalchemy.exc.StatementError: (builtins.ValueError) expected 1536 dimensions, not 3072

Environment changes will not be updated, and a new Command Row window needs to be Open.

Deploy to Render

Compile with default values: poetry install

Run: python main.py

Project example-day reading: Python-FastAPI

source directory

Need to change media_type="text/plain" totext/event-stream, but using Postman, found a problem~~

return StreamingResponse(event_generator(), media_type="text/plain")