Trying to install pymc on Anaconda(python) in Windows 7 and getting weird error?

Question

I want to run some data science algorithms using Markov Chain Monte Carlo for Bayesian analysis and am trying to install PyMC but am frustratingly getting this error...

File "C:\Anaconda\lib\site-packages\numpy\distutils\fcompiler\gnu.py", line 333, in get_libraries
raise NotImplementedError("Only MS compiler supported with gfortran on win64")
NotImplementedError: Only MS compiler supported with gfortran on win64

Why would this happen and what can I do to solve it that doesnt require me hacking up python and apparently numpy that might screw other things up at a later time?

Answer 1

It turns out if I just go to the line in question ...

"C:\Anaconda\lib\site-packages\numpy\distutils\fcompiler\gnu.py"

and comment out the statement so it looks like this -

else:
    pass #raise NotImplementedError("Only MS compiler supported with gfortran on win64")

PyMC compiles just fine.

Answer 2

Following on from Leon's answer, in my case it seems the problem was that my default Fortran compiler was mingw32 when gnu.py was expecting msvc . For PyMC's purposes mingw32 works fine, so if you'd prefer to weaken the conditional rather than eliminate it entirely, replace

        if c_compiler and c_compiler.compiler_type == "msvc":
            return []
        else:
            raise NotImplementedError("Only MS compiler supported with gfortran on win64")

in gnu.py with

        if c_compiler and c_compiler.compiler_type in ["msvc", "mingw32"]:
            return []
        else:
            raise NotImplementedError("Only MS compiler supported with gfortran on win64")