python中安装第三方模块

Python有两个封装了setuptools的包管理工具：easy_install和pip。目前官方推荐使用pip。

现在，让我们来安装一个第三方库——Python Imaging Library，这是Python下非常强大的处理图像的工具库。一般来说，第三方库都会在Python官方的pypi.python.org网站注册，要安装一个第三方库，必须先知道该库的名称，可以在官网或者pypi上搜索，比如Python Imaging Library的名称叫PIL，因此，安装Python Imaging Library的命令就是：

pip install PIL

出现如下问题：

Traceback (most recent call last): 

File “/usr/bin/pip-python”, line 5, in <module> 

from pkg_resources import load_entry_point 

File “build/bdist.linux-x86_64/egg/pkg_resources.py”, line 2749, in <module> 

File “build/bdist.linux-x86_64/egg/pkg_resources.py”, line 444, in _build_master 

File “build/bdist.linux-x86_64/egg/pkg_resources.py”, line 725, in require 

File “build/bdist.linux-x86_64/egg/pkg_resources.py”, line 628, in resolve 

pkg_resources.DistributionNotFound: pip==0.8

出现上述错误主要是由于python的版本太过老了，需要下载最新版本的setuptools

 无奈之下，只好去安装easy_install并安装。

easy_install PIL

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

PIL 1.1.7 SETUP SUMMARY

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

version       1.1.7

platform      linux2 2.7.3 (default, Jul  2 2014, 09:15:41)

              [GCC 4.8.1]

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

*** TKINTER support not available

--- JPEG support 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.



To check the build, run the selftest.py script.

zip_safe flag not set; analyzing archive contents...

Image: module references __file__

Adding PIL 1.1.7 to easy-install.pth file

Installing pilprint.py script to /usr/local/bin

Installing pilfile.py script to /usr/local/bin

Installing pilconvert.py script to /usr/local/bin

Installing pildriver.py script to /usr/local/bin

Installing pilfont.py script to /usr/local/bin



Installed /usr/local/lib/python2.7/site-packages/PIL-1.1.7-py2.7-linux-i686.egg

Processing dependencies for PIL

Finished processing dependencies for PIL