Commonly used tools like virtualenv allow you to do this, but it's not the default in the python ecosystem: `pip install foo` will install foo globally. In most

Commonly used tools like virtualenv allow you to do this, but it's not the default in the python ecosystem: `pip install foo` will install foo globally. In most other ecosystems the equivalent command (e.g. npm install foo) defaults to a local install with no effort on your part.