无法在Windows上安装lxml，发生致命错误C1083:无法打开包含文件:'libxml/xmlversion.h'

Python菜鸟，请多多包涵.我从www.python.org使用了适用于v3.5.1的python安装程序.我的目的是使用Scrapy运行一些脚本.

Python noob, please bear with me. I used python installer for v3.5.1 from www.python.org. My intent was to use Scrapy to run some scripts.

pip install scrapy失败，easy_install scrapy等也失败了.我将错误跟踪到lxml的错误安装.这是错误日志.我什至尝试过easy_installing libxml2，我不确定如何继续.

pip install scrapy failed, as did easy_install scrapy and others. I traced the error to a faulty install of lxml. Here is the error log. I've even tried easy_installing libxml2, I'm not sure how to proceed.

Building lxml version 3.5.0.
Building without Cython.
ERROR: b"'xslt-config' is not recognized as an internal or external command,\r\noperable program or batch file.\r\n"
** make sure the development packages of libxml2 and libxslt are installed **

Using build configuration of libxslt
cl : Command line warning D9025 : overriding '/W3' with '/w'
lxml.etree.c
src\lxml\includes\etree_defs.h(14): fatal error C1083: Cannot open include file: 'libxml/xmlversion.h': No such file or directory
Compile failed: command 'C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\VC\\BIN\\cl.exe' failed with exit status 2
xmlXPathInitck3f6zpk.c
C:\Users\Rohan\AppData\Local\Temp\easy_install-47utdost\lxml-3.5.0\temp\xmlXPathInitck3f6zpk.c(1): fatal error C1083: Cannot open include file: 'libxml/xpath.h': No such file or directory
*********************************************************************************
Could not find function xmlCheckVersion in library libxml2. Is libxml2 installed?
*********************************************************************************
error: Setup script exited with error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio 14.0\\VC\\BIN\\cl.exe' failed with exit status 2