pip notes

How to start python projects

cd <my-project>  
pyenv local 3.8.17  
python -m venv venv  
source venv/bin/activate  
pip install --upgrade pip  
pip install pip-tools  

How to update dependencies

Add deps to requirements.in, then:

pip-compile  

Commit requirements.txt and requirements.in. Then

pip install -r requirements.txt  

(Note: Do not use this method for libs. For libs, edit setup.cfg instead)

How to add main branch of lib as a dep

Add to requirements.in

git+https://github.com/google-gemini/generative-ai-python.git  

Then

pip-compile  

How to list installed packages

pip list  

How to show which pypi index is used

pip config list  

How to list outdated dependencies

pip list --outdated  

How to add a local lib as a dependency

This adds my-lib as a dependency to my-app:

mkdir ~/dev/my-app  
cd ~/dev/my-app  
pyenv local <version>  
python -m venv .env  
source .env/bin/activate  
pip install --upgrade pip  
pip install wheel  
pip install -e ~/dev/my-lib  

How to upgrade a package, update a package

It’s best to update in requirements.in, but for hacking:

pip install --upgrade scipy  

How to check if dependencies are satisfied

pip check  

How to install dependencies from a requirements file

pip install -r requirements3.txt