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Virtualenv

Virtualenv - https://virtualenv.pypa.io/ - user-managed python environment which simplifies development.

Between virtualenv and pip you can reliably configure dependencies across collaborator development environments. This is good for projects which depend on python dependencies.

Virtualenv Helpful Commands

Intialize a virtualenv.

virtualenv --python=$(type -p python2.7) .venv

Use virtualenv.

source .venv/bin/activate

You're now using a virtual environment just for python and your dependencies. pip installing packages will only affect the virtual environment.

Note: some Linux distrobutions have a bad version of pip so it is recommended that you upgrade pip in your virtualenv.

pip install -U pip

pip requirements

When you feel your python dependencies are in a good place, it is recommended to "freeze" these dependencies. This allows other collaborators to install them within their virtualenv and be able to completely reproduce your python environment.

Create a requirements.txt.

pip freeze > requirements.txt

If you have a python requirements.txt configured then you can install them with:

pip install -r requirements.txt