https://github.com/ipython/ipython/pull/1933

test_oinspect.py

import sys
import nose.tools as nt

from IPython.core import oinspect

def test_oinspect_f2py():
    from numpy import f2py

    # This is FORTRAN, so the indentation is important:
    source = \
"""
      SUBROUTINE HELLO_WORLD
c     This routine does absolutely nothing!
      END
"""
    modulename = 'test_oinspect_f2py'

    try:
        f2py.compile(source, modulename=modulename)
        __import__(modulename)
        mod = sys.modules[modulename]
    except:
        # Compilation failed, perhaps because no FORTRAN compiler
        # was available.
        pass
    else:
        oinspect.find_file(mod.hello_world)

if __name__ == "__main__":
    test_oinspect_f2py()