Git و GitHub

git config --global user.name "Ahmed Ali"
git config --global user.email "ahmed@example.com"

git init                       # start tracking this folder (once)
git status                     # what changed?
git add main.py                # stage one file
git add .                      # stage everything
git commit -m "Add pricing module"   # save a snapshot with a message
git log --oneline              # show history

venv/            # the virtual environment (huge, rebuild with requirements.txt)
__pycache__/     # Python cache files
.env             # secrets: API keys, passwords
*.csv            # large data files (optional)

# 1. Create an empty repo on github.com, then:
git remote add origin https://github.com/USERNAME/shop.git
git branch -M main
git push -u origin main

# After that, every time you commit:
git push

git switch -c add-discounts     # create a new branch and move to it
# ... edit files, add, commit ...
git switch main                 # back to main
git merge add-discounts         # bring the new feature into main