f2py: Could not locate executable C:Python27pythonw.exe Executable C:Python27pythonw.exe does not exist

Question

I am trying to run a simple Fortran subroutine using numpy.f2py as described on: http://docs.scipy.org/doc/numpy/user/c-info.python-as-glue.html#calling-f2py-from-python

When I try to compile (f2py.compile(source, modulename='add')) from python I get the following error:

"Could not locate executable C:Python27pythonw.exe
Executable C:Python27pythonw.exe does not exist"

Looking for this file I found that C:\Python27\pythonw.exe does exist in my system, so could it possible be a problem with the path?

In any case, any advice on how to make my code work?

Answer 1

I found a quick fix for the problem. However, I cannot guarantee that nothing else will break when using this.

In the file:

C:\Python27\Lib\site-packages\numpy\f2py\__init__.py

in line 40, change

s,o = exec_command(c)

to

s = os.system(c)

It seems that the main error lies in numpy.distutils.exec_command, which seems to omit the backslashes when calling python. Again, I may be playing with forces I do not understand, by replacing the more involved exec_command by os.system call. But it works for me.