参考文章：http://www.cnblogs.com/txw1958/archive/2012/07/12/scrapy_installation_introduce.html
一、 Scrapy简介
Scrapy is a fast high-level screen scraping and web crawling framework, used to crawl websites and extract structured data from their pages. It can be used for a wide range of purposes, from data mining to monitoring and automated testing.
官方主页： http://www.scrapy.org/
第三方中文文档：http://scrapy-chs.readthedocs.org/zh_CN/latest/intro/overview.html
二、 安装Python2.7
下载地址：http://www.python.org/ftp/python/2.7.3/python-2.7.3.msi
1) 安装python
安装目录：D:Python27
2) 添加环境变量
path 中添加 D:Python27;D:Python27Scripts;
3) 验证环境变量
打开命令行，并且运行以下命令来修改 PATH:
c:python27python.exe c:python27 oolsscriptswin_add2path.py
4) 验证Python
T:>python
Python 2.7.3 (default, Apr 10 2012, 23:31:26) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> exit()
T:>
三、 安装Twisted
Twisted is an event-driven networking engine written in Python and licensed under the open source
1) 安装setuptools
Download, build, install, upgrade, and uninstall Python packages -- easily!
官方主页：http://pypi.python.org/pypi/setuptools
下载地址：http://pypi.python.org/packages/2.7/s/setuptools/setuptools-0.6c11.win32-py2.7.exe
安装过程：略
2) 安装Zope.Interface
官方主页：http://pypi.python.org/pypi/zope.interface/
下载地址：http://pypi.python.org/packages/2.7/z/zope.interface/zope.interface-4.0.1-py2.7-win32.egg
注意区分64位和32位的程序。命令行要以管理员身份运行，程序应该放在“D:Python27Scripts”这个文件夹下。
安装过程：
T:>d:
D:>cd D:Python27Scripts
D:Python27Scripts>easy_install.exe zope.interface-4.0.1-py2.7-win32.egg
Processing zope.interface-4.0.1-py2.7-win32.egg
creating d:python27libsite-packageszope.interface-4.0.1-py2.7-win32.egg
Extracting zope.interface-4.0.1-py2.7-win32.egg to d:python27libsite-packages
Adding zope.interface 4.0.1 to easy-install.pth file
Installed d:python27libsite-packageszope.interface-4.0.1-py2.7-win32.egg
Processing dependencies for zope.interface==4.0.1
Finished processing dependencies for zope.interface==4.0.1
D:Python27Scripts>
验证安装：
D:Python27Scripts>python
Python 2.7.3 (default, Apr 10 2012, 23:31:26) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import zope.interface
>>>
3) 安装Twisted
官方主页：http://twistedmatrix.com/trac/wiki/TwistedProject
下载地址：http://pypi.python.org/packages/2.7/T/Twisted/Twisted-12.1.0.win32-py2.7.msi
安装过程：略
四、 安装w3lib
官方主页：http://pypi.python.org/pypi/w3lib
下载地址： http://pypi.python.org/packages/source/w/w3lib/w3lib-1.2.tar.gz
解压过程：略
安装过程：
T:w3lib-1.2>python setup.py install
running install
running build
running build_py
creating build
creating buildlib
creating buildlibw3lib
copying w3libencoding.py -> buildlibw3lib
copying w3libform.py -> buildlibw3lib
copying w3libhtml.py -> buildlibw3lib
copying w3libhttp.py -> buildlibw3lib
copying w3liburl.py -> buildlibw3lib
copying w3libutil.py -> buildlibw3lib
copying w3lib\__init__.py -> buildlibw3lib
running install_lib
creating D:Python27Libsite-packagesw3lib
copying buildlibw3libencoding.py -> D:Python27Libsite-packagesw3lib
copying buildlibw3libform.py -> D:Python27Libsite-packagesw3lib
copying buildlibw3libhtml.py -> D:Python27Libsite-packagesw3lib
copying buildlibw3libhttp.py -> D:Python27Libsite-packagesw3lib
copying buildlibw3liburl.py -> D:Python27Libsite-packagesw3lib
copying buildlibw3libutil.py -> D:Python27Libsite-packagesw3lib
copying buildlibw3lib\__init__.py -> D:Python27Libsite-packagesw3lib
byte-compiling D:Python27Libsite-packagesw3libencoding.py to encoding.pyc
byte-compiling D:Python27Libsite-packagesw3libform.py to form.pyc
byte-compiling D:Python27Libsite-packagesw3libhtml.py to html.pyc
byte-compiling D:Python27Libsite-packagesw3libhttp.py to http.pyc
byte-compiling D:Python27Libsite-packagesw3liburl.py to url.pyc
byte-compiling D:Python27Libsite-packagesw3libutil.py to util.pyc
byte-compiling D:Python27Libsite-packagesw3lib\__init__.py to __init__.pyc
running install_egg_info
Writing D:Python27Libsite-packagesw3lib-1.2-py2.7.egg-info
T:w3lib-1.2>
验证安装：
T:>python
Python 2.7.3 (default, Apr 10 2012, 23:31:26) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import w3lib
>>>
五、 安装libxml2
官方主页：http://users.skynet.be/sbi/libxml-python/http://pypi.python.org/pypi/pyOpenSSL
下载地址：http://users.skynet.be/sbi/libxml-python/binaries/libxml2-python-2.7.7.win32-py2.7.exe
安装过程：把程序放到“D:Python27Scripts”下，然后用easy_install安装。
D:Python27Scripts>easy_install.exe libxml2-python-2.7.7.win32-py2.7.exe
验证安装：
T:>python
Python 2.7.3 (default, Apr 10 2012, 23:31:26) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import libxml2
>>>
六、 安装pyOpenSSL
官方主页：http://pypi.python.org/pypi/pyOpenSSL
下载地址：http://pypi.python.org/packages/2.7/p/pyOpenSSL/pyOpenSSL-0.13.winxp32-py2.7.msi
安装过程：用pip安装（没有成功？）
pip install pyopenssl
验证安装：注意验证时import后面的OpenSSL是区分大小写的。
T:>python
Python 2.7.3 (default, Apr 10 2012, 23:31:26) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import OpenSSL
>>>
七、 安装Scrapy
官方主页：http://scrapy.org/
下载地址：http://pypi.python.org/packages/source/S/Scrapy/Scrapy-0.14.4.tar.gz
解压过程：略
安装过程：
T:Scrapy-0.14.4>python setup.py install
……
Installing easy_install-2.7-script.py script to D:Python27Scripts
Installing easy_install-2.7.exe script to D:Python27Scripts
Installing easy_install-2.7.exe.manifest script to D:Python27Scripts
Using d:python27libsite-packages
Finished processing dependencies for Scrapy==0.14.4
T:Scrapy-0.14.4>
验证安装：
T:>scrapy
Scrapy 0.14.4 - no active project
Usage:
scrapy <command> [options] [args]
Available commands:
fetch Fetch a URL using the Scrapy downloader
runspider Run a self-contained spider (without creating a project)
settings Get settings values
shell Interactive scraping console
startproject Create new project
version Print Scrapy version
view Open URL in browser, as seen by Scrapy
Use "scrapy <command> -h" to see more info about a command
T:>