在linux系统下获得coco源码很容易，windows系统就总是报错一些我看不懂的东西。
获取pycocotools的时候代码
cd cocoapi/PythonAPI
python setup.py build_ext install报错内容
"D:\Visual Studio\VC\Tools\MSVC\14.31.31103\bin\HostX86\x64\cl.exe" /c /nologo /O2 /W3 /GL /DNDEBUG /MD -ID:\Anaconda\envs\ATSS\lib\site-packages\numpy\core\include -I../common -ID:\An
aconda\envs\ATSS\include -ID:\Anaconda\envs\ATSS\Include "-ID:\Visual Studio\VC\Tools\MSVC\14.31.31103\ATLMFC\include" "-ID:\Visual Studio\VC\Tools\MSVC\14.31.31103\include" "-IC:\Prog
ram Files (x86)\Windows Kits\10\include\10.0.19041.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.19041.0\\shared" "-IC:\Program Files (x86)\Windows Kits\10\\include\1
0.0.19041.0\\um" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.19041.0\\winrt" "-IC:\Program Files (x86)\Windows Kits\10\\include\10.0.19041.0\\cppwinrt" /Tc../common/maskApi
.c /Fobuild\temp.win-amd64-3.8\Release\../common/maskApi.obj -Wno-cpp -Wno-unused-function -std=c99
cl: 命令行 error D8021 :无效的数值参数“/Wno-cpp”
error: command 'D:\\Visual Studio\\VC\\Tools\\MSVC\\14.31.31103\\bin\\HostX86\\x64\\cl.exe' failed with exit code 2
直接找到相应的setup.py文件
cd cocoapi/PythonAPI #到该文件夹下找到setup.py删除setup.py文件中的语段 '-Won-cpp','-Won-unused-function',
就是直接忽略掉错误的内容，再进行编译，就可以
