CODEWITHSUNDEEP
python-3.xubuntupipvirtualenv
Nelson
Nelson

Reputation: 952

Confusion with virtualenvs and Python packages

In my python program (run by a virtualenv using python3.5), I need to use the Pillow library to process an image.

ImportError: No module named 'Pillow'

tells me that Pillow is not installed in the virtualenv.

But, when I run pip install Pillow, I get back:

Requirement already satisfied: Pillow in /usr/lib/python3/dist-packages

If the pip I am using is from the virtualenv, then why is it looking in /usr/lib/python3/dist-packages to check if the package is already installed?

Just to make sure, I run type python and type pip to confirm that these 2 programs are from my virtualenv, and they are:

python is hashed (/home/nelson/.virtualenvs/MainEnv/bin/python)

pip is hashed (/home/nelson/.virtualenvs/MainEnv/bin/pip)

sudo was not used when creating the virtualenv (I know because this had already caused problems for me) or when trying to pip install; so where is the flaw in this logic? How can I install Pillow in my virtualenv / How can I import Pillow?

Upvotes: 2

Views: 198

Answers (2)

phd
phd

Reputation: 94397

Pillow is a fork of PIL. Hence from PIL import Image. See https://pillow.readthedocs.io/en/4.2.x/handbook/tutorial.html

Upvotes: 1

falsetru
falsetru

Reputation: 368894

If you created the virtual environment with --system-site-packages, the virtual environment has access to the global site-packages modules.

You need to re-create the virtual environment without --system-site-packages option if you don't want that.

Upvotes: 0

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