requirements.txt format code example

Example 1: pip install from requirements.txt

$ pip install -r requirements.txt

Example 2: python requirements.txt

pip freeze #view requirements to be created (best done in virtual env)
pip freeze > requirements.txt #create requirements.txt (best done in virtual env)
pip install -r requirements.txt #install requirements.txt (best done in virtual env)

Example 3: python requirements.txt

pip install -r requirements.txt