安装枕头后无法导入PIL

Question

I have python 3.x, and was told to install Pillow for image manipulation. After installing it with pip however, i'm unable to import PIL from the python interpreter. It just says ImportError: No module named 'PIL' . Running pip list in the command line shows that Pillow is indeed installed.

Answer 1

使用easy_install而不是pip后，它最终正确安装。

Answer 2

You might have used pip for a different python executable. To make sure that the correct pip command is used, run:

$ python3 -m pip install pillow

---

I don't really have the time or the means to create an entire virtual machine just for the purposes of testing this one problem.

virtualenv is not a virtual machine. All you need to create a virtualenv from scratch:

$ python3 -m pip install --user virtualenv # install package
$ python3 -m virtualenv venv # create virtualenv named 'venv'

Then to activate the created virtualenv on POSIX system :

$ source venv/bin/activate # activate on POSIX

Or on Windows:

C:\> venv\Scripts\activate

Now, python , pip commands refers to the virtualenv. To deactivate virtualenv, run:

$ deactivate