使用pip可以很方便地安装所需的python包，本篇仅简单记录下pip的安装，以备日后查阅。
1、下载get-pip.py
get-pip.py下载地址：https://bootstrap.pypa.io/get-pip.py
2、安装
我是将这个脚本放在Python的安装路径的Scripts目录下：
C:Python27Scripts>python get-pip.py Collecting pip Using cached https://files.pythonhosted.org/packages/5f/25/e52d3f31441505a5f3af41213346e5b6c221c9e086a166f3703d2ddaf940/pip-18.0-py2.py3-none-any.whl Collecting wheel Downloading https://files.pythonhosted.org/packages/81/30/e935244ca6165187ae8be876b6316ae201b71485538ffac1d718843025a9/wheel-0.31.1-py2.py3-none-any.whl (41kB) 100% |████████████████████████████████| 51kB 624kB/s Installing collected packages: pip, wheel Found existing installation: pip 9.0.3 Uninstalling pip-9.0.3: Successfully uninstalled pip-9.0.3 The script wheel.exe is installed in 'C:Python27Scripts' which is not on PATH. Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location. Successfully installed pip-18.0 wheel-0.31.1
默认会在当前目录生成几个pip*.exe，也即是：C:Python27Scripts
C:Python27Scripts 的目录 2018/08/18 11:13 <DIR> . 2018/08/18 11:13 <DIR> .. 2018/08/18 11:13 102,752 chardetect.exe 2018/07/27 13:17 98,153 easy_install-2.7.exe 2018/07/27 13:17 98,153 easy_install.exe 2018/08/10 15:22 1,642,522 get-pip.py 2018/08/10 15:23 102,743 pip.exe 2018/08/10 15:23 102,743 pip2.7.exe 2018/08/10 15:23 102,743 pip2.exe 2018/08/10 15:23 102,740 wheel.exe 8 个文件 2,352,549 字节 2 个目录 183,052,087,296 可用字节
需要将pip的文件的路径加到环境变量中，这样在其他目录下也能使用pip命令：
步骤：右键我的电脑->属性->高级系统设置->高级选项卡->环境变量->系统变量->Path->加入pip所在路径：C:Python27Scripts，
3、安装python包
上面安装好pip之后，就可以使用pip install命令安装我们所需要的包了。
C:Python27Scripts>pip install dnspython gevent Collecting dnspython Downloading https://files.pythonhosted.org/packages/a6/72/209e18bdfedfd78c6994e9ec96981624a5ad7738524dd474237268422cb8/dnspython-1.15.0-py2.py3-none-any.whl (177kB) 100% |████████████████████████████████| 184kB 758kB/s Collecting gevent Downloading https://files.pythonhosted.org/packages/f1/54/61ae4d9e1078c52047fa625cf39c8197517baa45599174e5d3ed91105b8a/gevent-1.3.5-cp27-cp27m-win_amd64.whl (2.1MB) 100% |████████████████████████████████| 2.1MB 3.2MB/s Collecting cffi>=1.11.5; sys_platform == "win32" and platform_python_implementation == "CPython" (from gevent) Downloading https://files.pythonhosted.org/packages/89/12/684bad296567b9300c7ac82a4f635b489ed589fa7c0bb2042208e3c020e3/cffi-1.11.5-cp27-cp27m-win_amd64.whl (163kB) 100% |████████████████████████████████| 163kB 957kB/s Collecting greenlet>=0.4.13; platform_python_implementation == "CPython" (from gevent) Downloading https://files.pythonhosted.org/packages/ad/23/1a05344026d49ba6a685ebad19933cdae0ef133038da5a941bfe2b215a6d/greenlet-0.4.14-cp27-cp27m-win_amd64.whl Collecting pycparser (from cffi>=1.11.5; sys_platform == "win32" and platform_python_implementation == "CPython"->gevent) Downloading https://files.pythonhosted.org/packages/8c/2d/aad7f16146f4197a11f8e91fb81df177adcc2073d36a17b1491fd09df6ed/pycparser-2.18.tar.gz (245kB) 100% |████████████████████████████████| 256kB 1.3MB/s Building wheels for collected packages: pycparser Running setup.py bdist_wheel for pycparser ... done Stored in directory: C:UsersliuzhenAppDataLocalpipCachewheelsc0a1275ba234bd77ea5a290cbf6d675259ec52293193467a12ef1f46 Successfully built pycparser Installing collected packages: dnspython, pycparser, cffi, greenlet, gevent Successfully installed cffi-1.11.5 dnspython-1.15.0 gevent-1.3.5 greenlet-0.4.14 pycparser-2.18