1. The following error occurred while installing LXML using PIP:

& gt; > > pip install lxml

C:\Users\Chen>pip install lxml
Collecting lxml
  Using cached lxml-3.5.0.tar.gz
Installing collected packages: lxml
  Running setup.py install for lxml ... error
    Complete output from command "d:\program files\python\python.exe" -u -c "import setuptools, tokenize;__file__='C:\\Users\\CHENJU~1\\AppData\\Local\\Temp\\pip-build-id5180h6\\lxml\\setup.py';
    Building lxml version 3.5.0.
    Building without Cython.
    ERROR: b"'xslt-config' \xb2\xbb\xca\xc7\xc4\xda\xb2\xbf\xbb\xf2\xcd\xe2\xb2\xbf\xc3\xfc\xc1\xee\xa3\xac\xd2\xb2\xb2\xbb\xca\xc7\xbf\xc9\xd4\xcb\xd0\xd0\xb5\xc4\xb3\xcc\xd0\xf2\r\n\xbb\xf2\xc
    ** make sure the development packages of libxml2 and libxslt are installed **

    Using build configuration of libxslt
    running install
    running build
    running build_py
    creating build
    creating build\lib.win32-3.5
    creating build\lib.win32-3.5\lxml
    copying src\lxml\builder.py -> build\lib.win32-3.5\lxml
    copying src\lxml\cssselect.py -> build\lib.win32-3.5\lxml
    copying src\lxml\doctestcompare.py -> build\lib.win32-3.5\lxml
    copying src\lxml\ElementInclude.py -> build\lib.win32-3.5\lxml
    copying src\lxml\pyclasslookup.py -> build\lib.win32-3.5\lxml
    copying src\lxml\sax.py -> build\lib.win32-3.5\lxml
    copying src\lxml\usedoctest.py -> build\lib.win32-3.5\lxml
    copying src\lxml\_elementpath.py -> build\lib.win32-3.5\lxml
    copying src\lxml\__init__.py -> build\lib.win32-3.5\lxml
    creating build\lib.win32-3.5\lxml\includes
    copying src\lxml\includes\__init__.py -> build\lib.win32-3.5\lxml\includes
    creating build\lib.win32-3.5\lxml\html
    copying src\lxml\html\builder.py -> build\lib.win32-3.5\lxml\html
    copying src\lxml\html\clean.py -> build\lib.win32-3.5\lxml\html
    copying src\lxml\html\defs.py -> build\lib.win32-3.5\lxml\html
    copying src\lxml\html\diff.py -> build\lib.win32-3.5\lxml\html
    copying src\lxml\html\ElementSoup.py -> build\lib.win32-3.5\lxml\html
    copying src\lxml\html\formfill.py -> build\lib.win32-3.5\lxml\html
    copying src\lxml\html\html5parser.py -> build\lib.win32-3.5\lxml\html
    copying src\lxml\html\soupparser.py -> build\lib.win32-3.5\lxml\html
    copying src\lxml\html\usedoctest.py -> build\lib.win32-3.5\lxml\html
    copying src\lxml\html\_diffcommand.py -> build\lib.win32-3.5\lxml\html
    copying src\lxml\html\_html5builder.py -> build\lib.win32-3.5\lxml\html
    copying src\lxml\html\_setmixin.py -> build\lib.win32-3.5\lxml\html
    copying src\lxml\html\__init__.py -> build\lib.win32-3.5\lxml\html
    creating build\lib.win32-3.5\lxml\isoschematron
    copying src\lxml\isoschematron\__init__.py -> build\lib.win32-3.5\lxml\isoschematron
    copying src\lxml\lxml.etree.h -> build\lib.win32-3.5\lxml
    copying src\lxml\lxml.etree_api.h -> build\lib.win32-3.5\lxml
    copying src\lxml\includes\c14n.pxd -> build\lib.win32-3.5\lxml\includes
    copying src\lxml\includes\config.pxd -> build\lib.win32-3.5\lxml\includes
    copying src\lxml\includes\dtdvalid.pxd -> build\lib.win32-3.5\lxml\includes
    copying src\lxml\includes\etreepublic.pxd -> build\lib.win32-3.5\lxml\includes
    copying src\lxml\includes\htmlparser.pxd -> build\lib.win32-3.5\lxml\includes
    copying src\lxml\includes\relaxng.pxd -> build\lib.win32-3.5\lxml\includes
    copying src\lxml\includes\schematron.pxd -> build\lib.win32-3.5\lxml\includes
    copying src\lxml\includes\tree.pxd -> build\lib.win32-3.5\lxml\includes
    copying src\lxml\includes\uri.pxd -> build\lib.win32-3.5\lxml\includes
    copying src\lxml\includes\xinclude.pxd -> build\lib.win32-3.5\lxml\includes
    copying src\lxml\includes\xmlerror.pxd -> build\lib.win32-3.5\lxml\includes
    copying src\lxml\includes\xmlparser.pxd -> build\lib.win32-3.5\lxml\includes
    copying src\lxml\includes\xmlschema.pxd -> build\lib.win32-3.5\lxml\includes
    copying src\lxml\includes\xpath.pxd -> build\lib.win32-3.5\lxml\includes
    copying src\lxml\includes\xslt.pxd -> build\lib.win32-3.5\lxml\includes
    copying src\lxml\includes\etree_defs.h -> build\lib.win32-3.5\lxml\includes
    copying src\lxml\includes\lxml-version.h -> build\lib.win32-3.5\lxml\includes
    creating build\lib.win32-3.5\lxml\isoschematron\resources
    creating build\lib.win32-3.5\lxml\isoschematron\resources\rng
    copying src\lxml\isoschematron\resources\rng\iso-schematron.rng -> build\lib.win32-3.5\lxml\isoschematron\resources\rng
    creating build\lib.win32-3.5\lxml\isoschematron\resources\xsl
    copying src\lxml\isoschematron\resources\xsl\RNG2Schtrn.xsl -> build\lib.win32-3.5\lxml\isoschematron\resources\xsl
    copying src\lxml\isoschematron\resources\xsl\XSD2Schtrn.xsl -> build\lib.win32-3.5\lxml\isoschematron\resources\xsl
    creating build\lib.win32-3.5\lxml\isoschematron\resources\xsl\iso-schematron-xslt1
    copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_abstract_expand.xsl -> build\lib.win32-3.5\lxml\isoschematron\resources\xsl\iso-schematron-xslt1
    copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_dsdl_include.xsl -> build\lib.win32-3.5\lxml\isoschematron\resources\xsl\iso-schematron-xslt1
    copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_schematron_message.xsl -> build\lib.win32-3.5\lxml\isoschematron\resources\xsl\iso-schematron-xslt1
    copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_schematron_skeleton_for_xslt1.xsl -> build\lib.win32-3.5\lxml\isoschematron\resources\xsl\iso-schematron-xslt1
    copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_svrl_for_xslt1.xsl -> build\lib.win32-3.5\lxml\isoschematron\resources\xsl\iso-schematron-xslt1
    copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\readme.txt -> build\lib.win32-3.5\lxml\isoschematron\resources\xsl\iso-schematron-xslt1
    running build_ext
    building 'lxml.etree' extension
    error: Unable to find vcvarsall.bat

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

2. Baidu to see how to solve the problem:

it turns out that this problem requires a separate operating system to handle. Nothing under window.

3. Linux system processing:

sudo apt-get install python-dev libxml2-dev libxslt1-dev zlib1g-dev

The or yum install…

and then proceed with PIP install LXML