[Django]-Installing a Module on Heroku

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13👍

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Every command you run on Heroku is run in an isolated and ephemeral environment — any changes you make during heroku run are thrown away immediately when the processes completes.

To make PIL available to your application, you need to add it to requirements.txt instead.

👤Kenneth Reitz

1👍

Are you sure you have followed http://devcenter.heroku.com/articles/django#prerequisites and your virtualenv is loaded?

BTW, I recommend using Pillow instead of PIL.

Introduction

The fork author’s goal is to foster packaging improvements via:

Publicized development and solicitation of community support.
Exploration of packaging problems within the fork, most noticably via
adding setuptools support but also via clean up & refactoring of
packaging code. Why a fork?

PIL is currently not setuptools compatible. Please see
http://mail.python.org/pipermail/image-sig/2010-August/006480.html for
a more detailed explanation. Also, PIL’s current release/maintenance
schedule is not compatible with the various & frequent packaging
issues that have occured.

👤Michael Samoylov

1👍

Sometimes PIL package is added in your path but it’s somewhere else than in site-packages. In this case you will be able to just import Image.

To make sure try something like this:

>>> import sys
>>> sys.path
[(...), '/usr/lib/python2.7/dist-packages/PIL', (...)]
>>> from PIL import Image
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named PIL
>>> import Image
>>> Image
<module 'Image' from '/usr/lib/python2.7/dist-packages/PIL/Image.pyc'>

In my applications I use code like this:

try:
    import Image, ImageDraw, ImageFont
except:
    from PIL import Image, ImageDraw, ImageFont
👤seler

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Even i was facing the same issue, I spent quite a lot of time.

I tried this

heroku run pip install PIL --app=your-app

error:

Running `pip install PIL` attached to terminal... up, run.1983
Downloading/unpacking PIL
  Could not find any downloads that satisfy the requirement PIL
  Some externally hosted files were ignored (use --allow-external PIL to allow).
Cleaning up...
No distributions at all found for PIL
Storing debug log for failure in /app/.pip/pip.log

But this helps like a charm 🙂

heroku run pip install Pillow --app=your-app

👤Nava

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