PIL不能正常使用exceptions.IOError: decoder jpeg not available

我这边是这么解决的：

安装了

sudo yum install -y libjpeg-devel

之后仍然不行，在安装

sudo pip install pillow

成功，不报错

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http://blog.chinaunix.net/uid-24567872-id-3927355.html
出现“exceptions.IOError: decoder jpeg not available”报错。

怀疑安装问题， 查看PIL的安装信息，发现几个库未生效：

--------------------------------------------------------------------

PIL 1.1.7 SETUP SUMMARY

--------------------------------------------------------------------

version 1.1.7

platform linux2 2.6.6 (r266:84292, Jul 10 2013, 22:48:45)

[GCC 4.4.7 20120313 (Red Hat 4.4.7-3)]

--------------------------------------------------------------------

*** TKINTER support not available

*** JPEG support not available

--- ZLIB (PNG/ZIP) support available

--- FREETYPE2 support available

*** LITTLECMS support not available

--------------------------------------------------------------------

To add a missing option, make sure you have the required

library, and set the corresponding ROOT variable in the

setup.py script.

安装：

yum install -y libjpeg-devel

重装PIL：

pip uninstall PIL

pip install PIL

日志：

--------------------------------------------------------------------

PIL 1.1.7 SETUP SUMMARY

--------------------------------------------------------------------

version 1.1.7

platform linux2 2.6.6 (r266:84292, Jul 10 2013, 22:48:45)

[GCC 4.4.7 20120313 (Red Hat 4.4.7-3)]

--------------------------------------------------------------------

*** TKINTER support not available

--- JPEG support available

--- ZLIB (PNG/ZIP) support available

--- FREETYPE2 support available

*** LITTLECMS support not available

--------------------------------------------------------------------

OK， JPEG 生效了。