Install from requirements

Install dependencies without using pip cache

pip install -r requirements.txt --no-cache-dir

More python commands

Freeze installed packages

pip freeze > requirements.txt

Save exact versions of all installed packages
Show outdated packages

pip list --outdated --format=columns

List packages with newer versions available
Run module as script

python3 -m http.server 8080

Serve current directory over HTTP on port 8080
One-liner JSON pretty print

python3 -m json.tool < input.json

Pretty-print a JSON file using stdlib
Profile script

python3 -m cProfile -s cumulative script.py | head -30

CPU profiling sorted by cumulative time