mac上安装PIL

692gwj9v57

　　在写图片上传的时候,碰到PIL不能处理JPG图片,出现异常
　　

            IOError: decoder jpeg not available
　　
　　The Python Imaging Library
,
PIL, is a very useful addition to your Python installation if you need
to manipulate pictures. Django uses it to validate upload images for
example.
　　On a Mac you do need to install libjpegbeforehand.
　　Install libjpeg:

• 　　Get the source: http://www.ijg.org/files/jpegsrc.v6b.tar.gz
  
  
  
• 　　Extract the archive.
  
  
• 　　Move inside the source directory and execute the following commands:
  
  cp /usr/share/libtool/config.sub .
  cp /usr/share/libtool/config.guess .
  ./configure --enable-shared
  make
  sudo mkdir -p /usr/local/include
  sudo mkdir -p /usr/local/bin
  sudo mkdir -p /usr/local/lib
  sudo mkdir -p /usr/local/man/man1
  sudo make install
  

　　Install PIL:

• 　　Get PIL at: http://effbot.org/downloads/Imaging-1.1.6.tar.gz
  
  
  
• 　　Extract the archive.
  
  
• 　　Move inside the source directory
  
  
• 　　Change the following values in setup.py from the default Noneto:
  
  JPEG_ROOT = "/usr/local/include"
  ZLIB_ROOT = "/usr/local/include"
  
• 　　Check if everything is well configured:
  
  python setup.py build_ext -i
  python selftest.py
  
• 　　If no errors are found and the required libraries are installed (like JPEG support), install PIL:
  
  sudo python setup.py install
  

　　And that's it, I've tried this on Mac OS Leopard, and it works fine, let me know how it went for you.