Install Python third-party libraries encountered installation issues Microsoft Visual Studio C + + 10.0 is required,could not find function xmlcheckversion in library LIBXM L2. is LIBXML2 installed?

Issue one: Microsoft Visual Studio C + + 10.0 is required

When installing Scrapy, VC C + + 10 is required, and sometimes there are other installations.

Workaround: Install VC 2010, installed 2017 invalid, the installation process is not the same.

Question two:

installed, could not find function xmlcheckversion in library LIBXML2 appears. is LIBXML2 installed?

Workaround:

1.PIP Install Wheel

2. To http://www.lfd.uci.edu/~gohlke/pythonlibs/#lxml下载xml, Python (I am 3.4.0,64 bit) corresponding version

3. Pip install full file name with suffix

After the problem is resolved, you can install Scrapy.

Pip Install Scrapy

Check if the installation is good

C:\users\lenovo>scrapy-h
Scrapy 1.4.0-no Active Project

Install Python third-party libraries encountered installation issues Microsoft Visual Studio C + + 10.0 is required,could not find function xmlcheckversion in library LIBXM L2. is LIBXML2 installed?