输入pip install Twisted提示：
build\lib.win-amd64-3.6\twisted\test\raiser.cp36-win_amd64.pyd : fatal error LNK1120: 79 unresolved externals
error: command 'C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\bin\link.exe' failed with exit status 1120
----------------------------------------
Command "C:\Users\Administrator\AppData\Local\Programs\Python\Python36\python.exe -u -c "import setuptools, tokenize;__file__='C:\Users\ADMINI~1\AppData\Local\Temp\pip-build-y2webbu4\twisted\setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, file, 'exec'))" install --record C:\Users\ADMINI~1\AppData\Local\Temp\pip-iqppc6gp-record\install-record.txt --single-version-externally-managed --compile" failed with error code 1 in C:\Users\ADMINI~1\AppData\Local\Temp\pip-build-y2webbu4\twisted\
