Langchain is an emerging python library that utilizes LLMs in clever ways. This allows people to create powerful applications with very high level code and abstraction.

There is a requirements.txt file that shows exactly which libraries and versions I have installed in my virtual environment.

Creating a virtual environment can be done by typing python -m venv {YOUR_VIRTUAL_ENVIRONMENT_NAME}. To activate the virtual environment you need to type YOUR_VIRTUAL_ENVIRONMENT_NAME/Scripts/Activate if on Windows or YOUR_VIRTUAL_ENVIRONMENT_NAME/bin/activate if on mac. You might need to type source YOUR_VIRTUAL_ENVIRONMENT_NAME/bin/activate to get it to work.
When you have activated your virtual environment you will need to install the necessary libraries. The easiest way to do this is to type python -m pip install -r requirements.txt.