Install scrapy with PIP under windows and report the following error. Just look at the error prompt http://aka.ms/vcpython27 There’s a solution

error: Microsoft Visual C++ 9.0 is required (Unable to find vcvarsall.bat ). Get it from http://aka.ms/vcpython27

open http://aka.ms/vcpython27 Will jump to http://www.microsoft.com/en-us/download/confirmation.aspx?id=44266

Download the installation package

Microsoft Visual C + + compiler for Python 2.7
can be installed back to solve the problem

http://blog.chedushi.com/archives/10610