Python软件管理工具pip的安装过程是怎样的

因为项目的原因我需要深入的学习python，后端程序依赖各种各种软件包，比如MySQLdb，新手可能会有些不熟悉 如何快速安装所需要的python 包。常用的python 包安装和管理有 easy_install, setuptools, pip，distribute。
本文则介绍pip---“A tool for installing and managing Python packages.“
安装pip
先要获取脚本 get-pip.py

wget https://bootstrap.pypa.io/get-pip.py

python get-pip.py

注意:
get-pip.py 会帮你安装setuptools,如果你已经安装了，则会运行升级命令:

pip install -U setuptools

升级pip

pip install -U pip

安装python 包

pip install SomePackage# 不指定版本 则下载最新版本

pip install SomePackage==1.0.4 # 下载指定版本

例如 下载安装 MySQLdb

root@rac3:~/scripts# >pip install MySQL-python

Collecting MySQL-python

/usr/local/lib/python2.7/site-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:315: SNIMissingWarning: An HTTPS request has been made, but the SNI (Subject Name Indication) extension to TLS is not available on this platform. This may cause the server to present an incorrect TLS certificate, which can cause validation failures. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#snimissingwarning.

SNIMissingWarning

/usr/local/lib/python2.7/site-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:120: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.

InsecurePlatformWarning

Downloading MySQL-python-1.2.5.zip (108kB)

100% |████████████████████████████████| 110kB 354kB/s

Building wheels for collected packages: MySQL-python

Running setup.py bdist_wheel for MySQL-python ... done

Stored in directory: /root/.cache/pip/wheels/8c/0d/11/d654cad764b92636ce047897dd2b9e1b0cd76c22f813c5851a

Successfully built MySQL-python

Installing collected packages: MySQL-python

Successfully installed MySQL-python-1.2.5