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563 lines
23 KiB
ReStructuredText
Pillow
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======
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*Python Imaging Library (Fork)*
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Pillow is the "friendly" PIL fork by Alex Clark and Contributors. PIL is the Python Imaging Library by Fredrik Lundh and Contributors.
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.. image:: https://travis-ci.org/python-imaging/Pillow.png
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:target: https://travis-ci.org/python-imaging/Pillow
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.. image:: https://pypip.in/v/Pillow/badge.png
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:target: https://pypi.python.org/pypi/Pillow/
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:alt: Latest PyPI version
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.. image:: https://pypip.in/d/Pillow/badge.png
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:target: https://pypi.python.org/pypi/Pillow/
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:alt: Number of PyPI downloads
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Introduction
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------------
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.. Note:: Pillow >= 2.1.0 no longer supports "import _imaging". Please use "from PIL.Image import core as _imaging" instead.
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.. Note:: Pillow < 2.0.0 supports Python versions 2.4, 2.5, 2.6, 2.7; Pillow >= 2.0.0 supports Python versions 2.6, 2.7, 3.2, 3.3.
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The fork author's goal is to foster active development of PIL through:
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- Continuous integration testing via `Travis CI <https://travis-ci.org/python-imaging/Pillow>`_
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- Publicized development activity on `GitHub <https://github.com/python-imaging/Pillow>`_
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- Regular releases to the `Python Package Index <https://pypi.python.org/pypi/Pillow>`_
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- Solicitation for community contributions and involvement on `Image-SIG <http://mail.python.org/mailman/listinfo/image-sig>`_
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Why a fork?
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~~~~~~~~~~~
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PIL is 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 bi-yearly (or greater) release schedule is too infrequent to accomodate the large number and frequency of issues reported.
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What about the official PIL?
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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.. Note:: Prior to Pillow 2.0.0, very few image code changes were made. Pillow 2.0.0 added Python 3 support and includes many bug fixes from many contributors.
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As more time passes since the last PIL release, the likelyhood of a new PIL release decreases. However, we've yet to hear an official "PIL is dead" announcement. So if you still want to support PIL, please report issues here first:
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- https://bitbucket.org/effbot/pil-2009-raclette/issues
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Then open a Pillow ticket here:
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- https://github.com/python-imaging/Pillow/issues
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Please provide a link to the PIL ticket so we can track the issue(s) upstream.
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Installation
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------------
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.. Note:: PIL and Pillow currently cannot co-exist in the same environment. If you want to use Pillow, please remove PIL first.
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You can install Pillow with ``pip``::
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$ pip install Pillow
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Or ``easy_install`` (for installing `Python Eggs <http://peak.telecommunity.com/DevCenter/PythonEggs>`_, as pip does not support them)::
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$ easy_install Pillow
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Or download the compressed archive from PyPI, extract it, and inside it run::
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$ python setup.py install
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For more information, please see http://pillow.readthedocs.org/en/latest/ or below.
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Documentation
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-------------
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The API documentation included with PIL has been converted (from HTML generated by pythondoc) to reStructured text (via pandoc) and is now `hosted by readthedocs.org <http://pillow.readthedocs.org>`_. This is a work in progress: in order to re-generate new API documentation, either `pythondoc <http://effbot.org/zone/pythondoc.htm>`_ will have to be run again or the pythondoc functionality must be converted to Sphinx.
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Community Support
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-----------------
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Developer
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~~~~~~~~~
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PIL needs you! Please help us maintain the Python Imaging Library here:
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- GitHub (https://github.com/python-imaging/Pillow)
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- Freenode (irc://irc.freenode.net#pil)
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- Image-SIG (http://mail.python.org/mailman/listinfo/image-sig)
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Financial
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~~~~~~~~~
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Pillow is a volunteer effort led by Alex Clark. If you can't help with development, please help us financially; your assistance is very much needed and appreciated!
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.. Note:: Contributors: please add your name and donation preference here.
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+--------------------------------------+---------------------------------------+
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| **Developer** | **Preference** |
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+--------------------------------------+---------------------------------------+
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| Alex Clark (fork author) | http://gittip.com/aclark4life |
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+--------------------------------------+---------------------------------------+
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Developer Notes
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---------------
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.. Note:: If there is a binary package for your system, that is the easiest way to install Pillow. Currently we only provide binaries for Windows (via Python eggs).
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Build from source
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~~~~~~~~~~~~~~~~~
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Many of Pillow's features require external libraries:
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* **libjpeg** provides JPEG functionality.
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* Pillow has been tested with libjpeg versions **6b**, **8**, and **9**
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* **zlib** provides access to compressed PNGs
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* **libtiff** provides group4 tiff functionality
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* Pillow has been tested with libtiff versions **3.x** and **4.0**
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* **libfreetype** provides type related services
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* **littlecms** provides color management
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* **libwebp** provides the Webp format.
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* Pillow has been tested with version **0.1.3**, which does not read transparent webp files. Version **0.3.0** supports transparency.
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* **tcl/tk** provides support for tkinter bitmap and photo images.
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If the prerequisites are installed in the standard library locations for your machine (e.g. /usr or /usr/local), no additional configuration should be required. If they are installed in a non-standard location, you may need to configure setuptools to use those locations (i.e. by editing setup.py and/or setup.cfg). Once you have installed the prerequisites, run::
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$ pip install Pillow
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Platform-specific instructions
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Linux
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+++++
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**We do not provide binaries for Linux.** If you didn't build Python from source, make sure you have Python's development libraries installed. In Debian or Ubuntu::
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$ sudo apt-get install python-dev python-setuptools
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Or for Python 3::
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$ sudo apt-get install python3-dev python3-setuptools
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Prerequisites are installed on **Ubuntu 10.04 LTS** with::
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$ sudo apt-get install libtiff4-dev libjpeg62-dev zlib1g-dev libfreetype6-dev liblcms1-dev tcl8.5-dev tk8.5-dev
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Prerequisites are installed with on **Ubuntu 12.04 LTS** or **Raspian Wheezy 7.0** with::
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$ sudo apt-get install libtiff4-dev libjpeg8-dev zlib1g-dev libfreetype6-dev liblcms1-dev libwebp-dev tcl8.5-dev tk8.5-dev
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Distributions
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^^^^^^^^^^^^^
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.. Note:: XXX Provide links
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Additionally, many Linux distributions now include Pillow (instead of PIL) with their distribution:
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- Fedora
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- Debian/Ubuntu
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- ArchLinux
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Mac OS X
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++++++++
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**We do not provide binaries for OS X.** So you'll need XCode to install Pillow. (XCode 4.2 on 10.6 will work with the Official Python binary distribution. Otherwise, use whatever XCode you used to compile Python.)
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The easiest way to install the prerequisites is via `Homebrew <http://mxcl.github.com/homebrew/>`_. After you install Homebrew, run::
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$ brew install libtiff libjpeg webp littlecms
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If you've built your own Python, then you should be able to install Pillow using::
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$ pip install Pillow
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Windows
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+++++++
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We provide binaries for Windows in the form of Python Eggs and `Python Wheels <http://wheel.readthedocs.org/en/latest/index.html>`_:
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Python Eggs
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^^^^^^^^^^^
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.. Note:: Pip does not support Python Eggs; use easy_install instead.
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::
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$ easy_install Pillow
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Python Wheels
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^^^^^^^^^^^^^
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.. Note:: Experimental. Requires Setuptools >=0.8 and Pip >=1.4.1
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::
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$ pip install --use-wheel Pillow
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Platform support
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~~~~~~~~~~~~~~~~
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Current platform support for Pillow. Binary distributions are contributed for each release on a volunteer basis, but the source should compile and run everywhere platform support is listed. In general, we aim to support all current versions of Linux, OS X, and Windows.
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.. Note:: Contributors please test on your platform, edit this document and send a pull request
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+----------------------------------+-------------+------------------------------+------------------------------+-----------------------+
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|**Operating system** |**Supported**|**Tested Python versions** |**Tested Pillow versions** |**Tested processors** |
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+----------------------------------+-------------+------------------------------+------------------------------+-----------------------+
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| CentOS 6.3 |Yes | 2.7,3.3 | |x86 |
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+----------------------------------+-------------+------------------------------+------------------------------+-----------------------+
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| Mac OS X 10.8 Mountain Lion |Yes | 2.6,2.7,3.2,3.3 | |x86-64 |
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+----------------------------------+-------------+------------------------------+------------------------------+-----------------------+
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| Mac OS X 10.7 Lion |Yes | 2.6,2.7,3.2,3.3 | 2.2.0 |x86-64 |
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+----------------------------------+-------------+------------------------------+------------------------------+-----------------------+
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| Redhat Linux 6 |Yes | 2.6 | |x86 |
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+----------------------------------+-------------+------------------------------+------------------------------+-----------------------+
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| Ubuntu Linux 10.04 LTS |Yes | 2.6 | 2.2.0 |x86,x86-64 |
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+----------------------------------+-------------+------------------------------+------------------------------+-----------------------+
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| Ubuntu Linux 12.04 LTS |Yes | 2.6,2.7,3.2,3.3,PyPy2.1 | 2.2.0 |x86,x86-64 |
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+----------------------------------+-------------+------------------------------+------------------------------+-----------------------+
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| Raspian Wheezy |Yes | 2.7,3.2 | 2.2.0 |arm |
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+----------------------------------+-------------+------------------------------+------------------------------+-----------------------+
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| Gentoo Linux |Yes | 2.7,3.2 | 2.1.0 |x86-64 |
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+----------------------------------+-------------+------------------------------+------------------------------+-----------------------+
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| Windows 7 Pro |Yes | 2.7,3.2 | |x86 |
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+----------------------------------+-------------+------------------------------+------------------------------+-----------------------+
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| Windows Server 2008 R2 Enterprise|Yes | 3.3 | |x86-64 |
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+----------------------------------+-------------+------------------------------+------------------------------+-----------------------+
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| Windows 8 Pro |Yes | 2.6,2.7,3.2,3.3,3.4a3 | 2.2.0 |x86,x86-64 |
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+----------------------------------+-------------+------------------------------+------------------------------+-----------------------+
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Port existing PIL-based code to Pillow
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Pillow is a functional drop-in replacement for the Python Imaging Library. To run your existing PIL-compatible code with Pillow, it needs to be modified to import the ``Imaging`` module from the ``PIL`` namespace *instead* of the global namespace. I.e. change::
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import Image
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to::
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from PIL import Image
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.. Note:: If your code imports from ``_imaging``, it will no longer work.
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The preferred, future proof method of importing the private ``_imaging`` module is::
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from PIL import Image
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_imaging = Image.core
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Python Imaging Library
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======================
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.. Note:: What follows is the original PIL 1.1.7 README file contents.
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::
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The Python Imaging Library
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$Id$
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Release 1.1.7 (November 15, 2009)
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====================================================================
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The Python Imaging Library 1.1.7
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====================================================================
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Contents
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--------
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+ Introduction
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+ Support Options
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- Commercial support
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- Free support
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+ Software License
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+ Build instructions (all platforms)
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- Additional notes for Mac OS X
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- Additional notes for Windows
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--------------------------------------------------------------------
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Introduction
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--------------------------------------------------------------------
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The Python Imaging Library (PIL) adds image processing capabilities
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to your Python environment. This library provides extensive file
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format support, an efficient internal representation, and powerful
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image processing capabilities.
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This source kit has been built and tested with Python 2.0 and newer,
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on Windows, Mac OS X, and major Unix platforms. Large parts of the
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library also work on 1.5.2 and 1.6.
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The main distribution site for this software is:
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http://www.pythonware.com/products/pil/
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That site also contains information about free and commercial support
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options, PIL add-ons, answers to frequently asked questions, and more.
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Development versions (alphas, betas) are available here:
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http://effbot.org/downloads/
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The PIL handbook is not included in this distribution; to get the
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latest version, check:
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http://www.pythonware.com/library/
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http://effbot.org/books/imagingbook/ (drafts)
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For installation and licensing details, see below.
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--------------------------------------------------------------------
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Support Options
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--------------------------------------------------------------------
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+ Commercial Support
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Secret Labs (PythonWare) offers support contracts for companies using
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the Python Imaging Library in commercial applications, and in mission-
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critical environments. The support contract includes technical support,
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bug fixes, extensions to the PIL library, sample applications, and more.
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For the full story, check:
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http://www.pythonware.com/products/pil/support.htm
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+ Free Support
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For support and general questions on the Python Imaging Library, send
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e-mail to the Image SIG mailing list:
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image-sig@python.org
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You can join the Image SIG by sending a mail to:
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image-sig-request@python.org
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Put "subscribe" in the message body to automatically subscribe to the
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list, or "help" to get additional information. Alternatively, you can
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send your questions to the Python mailing list, python-list@python.org,
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or post them to the newsgroup comp.lang.python. DO NOT SEND SUPPORT
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QUESTIONS TO PYTHONWARE ADDRESSES.
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--------------------------------------------------------------------
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Software License
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--------------------------------------------------------------------
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The Python Imaging Library is
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Copyright (c) 1997-2009 by Secret Labs AB
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Copyright (c) 1995-2009 by Fredrik Lundh
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By obtaining, using, and/or copying this software and/or its
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associated documentation, you agree that you have read, understood,
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and will comply with the following terms and conditions:
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Permission to use, copy, modify, and distribute this software and its
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associated documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appears in all
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copies, and that both that copyright notice and this permission notice
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appear in supporting documentation, and that the name of Secret Labs
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AB or the author not be used in advertising or publicity pertaining to
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distribution of the software without specific, written prior
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permission.
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SECRET LABS AB AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO
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THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS. IN NO EVENT SHALL SECRET LABS AB OR THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
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OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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--------------------------------------------------------------------
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Build instructions (all platforms)
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--------------------------------------------------------------------
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For a list of changes in this release, see the CHANGES document.
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0. If you're in a hurry, try this:
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$ tar xvfz Imaging-1.1.7.tar.gz
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$ cd Imaging-1.1.7
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$ python setup.py install
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If you prefer to know what you're doing, read on.
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1. Prerequisites.
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If you need any of the features described below, make sure you
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have the necessary libraries before building PIL.
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feature library
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-----------------------------------------------------------------
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JPEG support libjpeg (6a or 6b)
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http://www.ijg.org
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http://www.ijg.org/files/jpegsrc.v6b.tar.gz
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ftp://ftp.uu.net/graphics/jpeg/
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PNG support zlib (1.2.3 or later is recommended)
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http://www.gzip.org/zlib/
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OpenType/TrueType freetype2 (2.3.9 or later is recommended)
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support
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http://www.freetype.org
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http://freetype.sourceforge.net
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CMS support littleCMS (1.1.5 or later is recommended)
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support
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http://www.littlecms.com/
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If you have a recent Linux version, the libraries provided with the
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operating system usually work just fine. If some library is
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missing, installing a prebuilt version (jpeg-devel, zlib-devel,
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etc) is usually easier than building from source. For example, for
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Ubuntu 9.10 (karmic), you can install the following libraries:
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sudo apt-get install libjpeg62-dev
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sudo apt-get install zlib1g-dev
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sudo apt-get install libfreetype6-dev
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sudo apt-get install liblcms1-dev
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If you're using Mac OS X, you can use the 'fink' tool to install
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missing libraries (also see the Mac OS X section below).
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Similar tools are available for many other platforms.
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2. To build under Python 1.5.2, you need to install the stand-alone
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version of the distutils library:
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http://www.python.org/sigs/distutils-sig/download.html
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You can fetch distutils 1.0.2 from the Python source repository:
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svn export http://svn.python.org/projects/python/tags/Distutils-1_0_2/Lib/distutils/
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For newer releases, the distutils library is included in the
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Python standard library.
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NOTE: Version 1.1.7 is not fully compatible with 1.5.2. Some
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more recent additions to the library may not work, but the core
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functionality is available.
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3. If you didn't build Python from sources, make sure you have
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Python's build support files on your machine. If you've down-
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loaded a prebuilt package (e.g. a Linux RPM), you probably
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need additional developer packages. Look for packages named
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"python-dev", "python-devel", or similar. For example, for
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Ubuntu 9.10 (karmic), use the following command:
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sudo apt-get install python-dev
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4. When you have everything you need, unpack the PIL distribution
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(the file Imaging-1.1.7.tar.gz) in a suitable work directory:
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$ cd MyExtensions # example
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$ gunzip Imaging-1.1.7.tar.gz
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$ tar xvf Imaging-1.1.7.tar
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5. Build the library. We recommend that you do an in-place build,
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and run the self test before installing.
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$ cd Imaging-1.1.7
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$ python setup.py build_ext -i
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$ python selftest.py
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During the build process, the setup.py will display a summary
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report that lists what external components it found. The self-
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test will display a similar report, with what external components
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the tests found in the actual build files:
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----------------------------------------------------------------
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PIL 1.1.7 SETUP SUMMARY
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----------------------------------------------------------------
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*** TKINTER support not available (Tcl/Tk 8.5 libraries needed)
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--- JPEG support available
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--- ZLIB (PNG/ZIP) support available
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--- FREETYPE support available
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----------------------------------------------------------------
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Make sure that the optional components you need are included.
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If the build script won't find a given component, you can edit the
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setup.py file and set the appropriate ROOT variable. For details,
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see instructions in the file.
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If the build script finds the component, but the tests cannot
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identify it, try rebuilding *all* modules:
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$ python setup.py clean
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$ python setup.py build_ext -i
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6. If the setup.py and selftest.py commands finish without any
|
|
errors, you're ready to install the library:
|
|
|
|
$ python setup.py install
|
|
|
|
(depending on how Python has been installed on your machine,
|
|
you might have to log in as a superuser to run the 'install'
|
|
command, or use the 'sudo' command to run 'install'.)
|
|
|
|
|
|
--------------------------------------------------------------------
|
|
Additional notes for Mac OS X
|
|
--------------------------------------------------------------------
|
|
|
|
On Mac OS X you will usually install additional software such as
|
|
libjpeg or freetype with the "fink" tool, and then it ends up in
|
|
"/sw". If you have installed the libraries elsewhere, you may have
|
|
to tweak the "setup.py" file before building.
|
|
|
|
|
|
--------------------------------------------------------------------
|
|
Additional notes for Windows
|
|
--------------------------------------------------------------------
|
|
|
|
On Windows, you need to tweak the ROOT settings in the "setup.py"
|
|
file, to make it find the external libraries. See comments in the
|
|
file for details.
|
|
|
|
Make sure to build PIL and the external libraries with the same
|
|
runtime linking options as was used for the Python interpreter
|
|
(usually /MD, under Visual Studio).
|
|
|
|
|
|
Note that most Python distributions for Windows include libraries
|
|
compiled for Microsoft Visual Studio. You can get the free Express
|
|
edition of Visual Studio from:
|
|
|
|
http://www.microsoft.com/Express/
|
|
|
|
To build extensions using other tool chains, see the "Using
|
|
non-Microsoft compilers on Windows" section in the distutils handbook:
|
|
|
|
http://www.python.org/doc/current/inst/non-ms-compilers.html
|
|
|
|
For additional information on how to build extensions using the
|
|
popular MinGW compiler, see:
|
|
|
|
http://mingw.org (compiler)
|
|
http://sebsauvage.net/python/mingw.html (build instructions)
|
|
http://sourceforge.net/projects/gnuwin32 (prebuilt libraries)
|