Failed to build pycocotools

Question

I am new to machine learning and I am trying to download the requirements for a repo using

pip install -r requirements.txt

I am currently using Anaconda (3.7) version 2020.02. All the other requirements have been satisfied, this is the error I am getting:

Building wheels for collected packages: pycocotools
  Building wheel for pycocotools (setup.py) ... error
  ERROR: Command errored out with exit status 1:
   command: 'C:\Users\Hp\anaconda3\envs\wob1\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\Hp\\AppData\\Local\\Temp\\pip-req-build-mfm5emhp\\PythonAPI\\setup.py'"'"'; __file__='"'"'C:\\Users\\Hp\\AppData\\Local\\Temp\\pip-req-build-mfm5emhp\\PythonAPI\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d 'C:\Users\Hp\AppData\Local\Temp\pip-wheel-g2bhmm6i'
       cwd: C:\Users\Hp\AppData\Local\Temp\pip-req-build-mfm5emhp\PythonAPI
  Complete output (22 lines):
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build\lib.win-amd64-3.8
  creating build\lib.win-amd64-3.8\pycocotools
  copying pycocotools\coco.py -> build\lib.win-amd64-3.8\pycocotools
  copying pycocotools\cocoeval.py -> build\lib.win-amd64-3.8\pycocotools
  copying pycocotools\mask.py -> build\lib.win-amd64-3.8\pycocotools
  copying pycocotools\__init__.py -> build\lib.win-amd64-3.8\pycocotools
  running build_ext
  cythoning pycocotools/_mask.pyx to pycocotools\_mask.c
  C:\Users\Hp\anaconda3\envs\wob1\lib\site-packages\Cython\Compiler\Main.py:369: FutureWarning: Cython directive 'language_level' not set, using 2 for now (Py2). This will change in a later release! File: C:\Users\Hp\AppData\Local\Temp\pip-req-build-mfm5emhp\PythonAPI\pycocotools\_mask.pyx
    tree = Parsing.p_module(s, pxd, full_module_name)
  building 'pycocotools._mask' extension
  creating build\temp.win-amd64-3.8
  creating build\temp.win-amd64-3.8\common
  creating build\temp.win-amd64-3.8\Release
  creating build\temp.win-amd64-3.8\Release\pycocotools
  C:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.26.28801\bin\HostX86\x64\cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -IC:\Users\Hp\anaconda3\envs\wob1\lib\site-packages\numpy\core\include -I../common -IC:\Users\Hp\anaconda3\envs\wob1\include -IC:\Users\Hp\anaconda3\envs\wob1\include "-IC:\Program Files (x86)\Microsoft Visual Studio\2019\BuildTools\VC\Tools\MSVC\14.26.28801\include" "-IC:\Program Files (x86)\Windows Kits\NETFXSDK\4.8\include\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\ucrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\shared" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\um" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\winrt" "-IC:\Program Files (x86)\Windows Kits\10\include\10.0.18362.0\cppwinrt" /Tc../common/maskApi.c /Fobuild\temp.win-amd64-3.8\Release\../common/maskApi.obj -Wno-cpp -Wno-unused-function -std=c99
  cl : Command line error D8021 : invalid numeric argument '/Wno-cpp'
  error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\BuildTools\\VC\\Tools\\MSVC\\14.26.28801\\bin\\HostX86\\x64\\cl.exe' failed with exit status 2
  ----------------------------------------
  ERROR: Failed building wheel for pycocotools
  Running setup.py clean for pycocotools
Failed to build pycocotools

I have tried other suggested solutions and am able to import pycocotools in the terminal and I have Microsoft Visual Studio. Any help will be appreciated, thanks.

Skater

the library does not seem to offer windows support. There seem to be forks out there who do, though, see: github.com/cocodataset/cocoapi/issues/51 – Nissie

Answer 1

If you are using Conda environment you can install like this

conda install -c conda-forge pycocotools

This solved my problem.

Zanze

Bingo! This was the ticket for me. – Neau

Answer 2

I had the same error for when I tried pip install pycocotools to my virtual environment venv. Installing pycocotools has other package dependencies - I'm not sure which exactly but it's among these here which are installed in venv. Probably just numpy and cython are necessary, but I haven't tested that.

I'm sure everything from your requirements.txt covers the dependencies already.

Make these dependencies findable by adding your venv to the PYTHONPATH in ~./bash_profile:

export PYTHONPATH="${PYTHONPATH}:path/to/venv"

If you don't have a virtual environment, then the path to the library containing the dependencies should work.

Immanuel