How to make sure you call pip only in virtualenv?

Question

How to prevent accidentally calling pip when I am not in a virtualenv?

I wrote the following script called pipand added it to my ~/bin (whi

Answer 1

export PIP_REQUIRE_VIRTUALENV=true

Answer 2

I'd recommend putting this in your ~/.bashrc file:

export PIP_REQUIRE_VIRTUALENV=true

and you can also add the following function to your ~/.bashrc that allows you to explicitly call pip outside of a virtual environment if you so choose:

gpip() {
   PIP_REQUIRE_VIRTUALENV="" pip "$@"
}

Now you can still use your global pip version for doing things like upgrading virtualenv:

gpip install --upgrade pip virtualenv