安装scrapy

安装scrapy报错

　　。。。。。。。。

    copying src wistedinternetiocpreactoriocpsupportwinsock_pointers.c -> buildlib.win-amd64-3.6 wistedinternetiocpreactoriocpsupport
    copying src wistedinternetiocpreactoriocpsupportwinsock_pointers.h -> buildlib.win-amd64-3.6 wistedinternetiocpreactoriocpsupport
    copying src wistedinternetiocpreactoriocpsupportwsarecv.pxi -> buildlib.win-amd64-3.6 wistedinternetiocpreactoriocpsupport
    copying src wistedinternetiocpreactoriocpsupportwsasend.pxi -> buildlib.win-amd64-3.6 wistedinternetiocpreactoriocpsupport
    copying src wistedinternet est\_awaittests.py.3only -> buildlib.win-amd64-3.6 wistedinternet est
    copying src wistedinternet est\_yieldfromtests.py.3only -> buildlib.win-amd64-3.6 wistedinternet est
    creating buildlib.win-amd64-3.6 wistedinternet estfake_CAs
    copying src wistedinternet estfake_CAschain.pem -> buildlib.win-amd64-3.6 wistedinternet estfake_CAs
    copying src wistedinternet estfake_CAs ot-a-certificate -> buildlib.win-amd64-3.6 wistedinternet estfake_CAs
    copying src wistedinternet estfake_CAs hing1.pem -> buildlib.win-amd64-3.6 wistedinternet estfake_CAs
    copying src wistedinternet estfake_CAs hing2-duplicate.pem -> buildlib.win-amd64-3.6 wistedinternet estfake_CAs
    copying src wistedinternet estfake_CAs hing2.pem -> buildlib.win-amd64-3.6 wistedinternet estfake_CAs
    copying src wistedmail est fc822.message -> buildlib.win-amd64-3.6 wistedmail est
    copying src wistedpython est\_deprecatetests.py.3only -> buildlib.win-amd64-3.6 wistedpython est
    copying src wistedwordsiminstancemessenger.glade -> buildlib.win-amd64-3.6 wistedwordsim
    copying src wistedwordsxishxpathparser.g -> buildlib.win-amd64-3.6 wistedwordsxish
    running build_ext
    building 'twisted.test.raiser' extension
    error: Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": http://landinghub.visualstudio.com/visual-cpp-build-tools

    ----------------------------------------
Command "d:python36python.exe -u -c "import setuptools, tokenize;__file__='C:\Users\xjd_0\AppData\Local\Temp\pip-install-v3oenju8\Twisted\setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace(' ', ' ');f.close();exec(compile(code, __file__, 'exec'))" install --record C:Usersxjd_0AppDataLocalTemppip-record-b1fuy076install-record.txt --single-version-externally-managed --compile" failed with error code 1 in C:Usersxjd_0AppDataLocalTemppip-install-v3oenju8Twisted

解决办法：

http://www.lfd.uci.edu/~gohlke/pythonlibs/#twisted 下载twisted对应版本的whl文件（如我的Twisted-18.4.0-cp36-cp36m-win_amd64.whl），cp后面是python版本，amd64代表64位，运行命令：

pip install  C:Usersxjd_0DownloadsTwisted-18.4.0-cp36-cp36m-win_amd64.whl

其中install后面为下载的whl文件的完整路径名

安装完成后，再次运行：

pip install scrapy

即可成功。