Langflow Developer Quick Start

LangFlow is a no-code solution for seamless exploration and deployment of powerful LLM apps. It brings a UI for LangChain components, making it easy to experiment and prototype flows.

If you want to contribute to Langflow or want to build Langflow and enable it run locally, here is a short tutorial you may want to follow to start .

Setup Python Virtual Environment

In a nutshell, Python virtual environments help decouple and isolate Python installs and associated pip packages. This allows end-users to install and manage their own set of packages that are independent of those provided by the system or used by other projects.

Langflow was written in Python, it is strongly recommended to use venv as your development environment. Check out Virtual Environments and Packages as example.

This is my local python virtual environment.

guangyaliu@Guangyas-MacBook-Pro-2 ~ % . ycliu/bin/activate
(ycliu) guangyaliu@Guangyas-MacBook-Pro-2 ~ %

Fork and Clone The LangFlow Code

Langflow source code is at https://github.com/logspace-ai/langflow , and you may want to fork it first and clone to your local host.

In my environment, it was cloned to my localhost as follows:

(ycliu) guangyaliu@Guangyas-MacBook-Pro-2 langflow % pwd
/Users/guangyaliu/go/src/github.com/logspace-ai/langflow
(ycliu)…