Can't install PyMC neither through conda nor pip on Windows 7

[mayankkaizen]

I have Anaconda on Windows 7. Python version is 3.6. I ran conda install pyMC and it showed following errors -

UnsatisfiableError: The following specifications were found to be in conflict:
  - pymc
  - yellowbrick -> scikit-learn >=0.19
Use "conda info <package>" to see the dependencies for each package.

Using is pip also didn't solve the problem. I ran pip install pymc and it threw quite a long error message. I am pasting last part of message here -

    running build_ext
    No module named 'numpy.distutils._msvccompiler' in numpy.distutils; trying from distutils
    customize MSVCCompiler
    customize MSVCCompiler using build_ext
    get_default_fcompiler: matching types: '['gnu', 'intelv', 'absoft', 'compaqv
', 'intelev', 'gnu95', 'g95', 'intelvem', 'intelem', 'flang']'
    customize GnuFCompiler
    Could not locate executable g77
    Could not locate executable f77
    customize IntelVisualFCompiler
   Could not locate executable ifort
   Could not locate executable ifl
    customize AbsoftFCompiler
    Could not locate executable f90
    customize CompaqVisualFCompiler
    Found executable c:\cygwin\bin\DF.exe
    customize IntelItaniumVisualFCompiler
    Could not locate executable efl
    customize Gnu95FCompiler
    Could not locate executable gfortran
    Could not locate executable f95
    customize G95FCompiler
    Could not locate executable g95
    customize IntelEM64VisualFCompiler
    customize IntelEM64TFCompiler
    Could not locate executable efort
    Could not locate executable efc
    customize PGroupFlangCompiler
    Could not locate executable flang
    don't know how to compile Fortran code on platform 'nt'
    warning: build_ext: f77_compiler=None is not available.

    building 'pymc.flib' extension
    error: extension 'pymc.flib' has Fortran sources but no Fortran compiler found

    ----------------------------------------
Command "c:\miniconda3\envs\data\python.exe -u -c "import setuptools, tokenize;_
_file__='C:\\Users\\Sam\\AppData\\Local\\Temp\\pip-install-mp8kw1h2\\pyMC\\se
tup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n'
, '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record C:\Use
rs\Sam\AppData\Local\Temp\pip-record-zt5fxwzt\install-record.txt --single-ver
sion-externally-managed --compile" failed with error code 1 in C:\Users\Sam\A
    ppData\Local\Temp\pip-install-mp8kw1h2\pyMC\

Don't know what is going on and what to do?

[fonnesbeck]

I’ve not seen the conda error before. Can you try installing into a clean conda env?

Installing via pip is tricky on windows—see the docs for details.

Are you intending to install PyMC 2? We recommend that users run PyMC 3 unless there is a reason not to.

[mayankkaizen]

@fonnesbeck Though I am not sure what was the problem with pymc, I had no issue with installation of pymc3.

Thanks for the reply and this amazing library.