f2py-example.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Overwriting testmod.f90\n"
     ]
    }
   ],
   "source": [
    "%%file testmod.f90\n",
    "module testmod\n",
    "contains\n",
    "subroutine pdims(a)\n",
    "real, dimension(:,:) :: a\n",
    "print *, size(a,1), size(a,2)\n",
    "end subroutine\n",
    "end module testmod"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "\u001b[39mrunning build\u001b[0m\n",
      "\u001b[39mrunning config_cc\u001b[0m\n",
      "\u001b[39munifing config_cc, config, build_clib, build_ext, build commands --compiler options\u001b[0m\n",
      "\u001b[39mrunning config_fc\u001b[0m\n",
      "\u001b[39munifing config_fc, config, build_clib, build_ext, build commands --fcompiler options\u001b[0m\n",
      "\u001b[39mrunning build_src\u001b[0m\n",
      "\u001b[39mbuild_src\u001b[0m\n",
      "\u001b[39mbuilding extension \"testmod\" sources\u001b[0m\n",
      "\u001b[39mf2py options: []\u001b[0m\n",
      "\u001b[39mf2py:> /tmp/tmpQQL61E/src.linux-x86_64-2.7/testmodmodule.c\u001b[0m\n",
      "\u001b[39mcreating /tmp/tmpQQL61E/src.linux-x86_64-2.7\u001b[0m\n",
      "Reading fortran codes...\n",
      "\tReading file 'testmod.f90' (format:free)\n",
      "Post-processing...\n",
      "\tBlock: testmod\n",
      "\t\t\tBlock: testmod\n",
      "\t\t\t\tBlock: pdims\n",
      "Post-processing (stage 2)...\n",
      "\tBlock: testmod\n",
      "\t\tBlock: unknown_interface\n",
      "\t\t\tBlock: testmod\n",
      "\t\t\t\tBlock: pdims\n",
      "Building modules...\n",
      "\tBuilding module \"testmod\"...\n",
      "\t\tConstructing F90 module support for \"testmod\"...\n",
      "\t\tCreating wrapper for Fortran subroutine \"pdims\"(\"pdims\")...\n",
      "\t\t\tConstructing wrapper function \"testmod.pdims\"...\n",
      "\t\t\t  pdims(a)\n",
      "\tWrote C/API module \"testmod\" to file \"/tmp/tmpQQL61E/src.linux-x86_64-2.7/testmodmodule.c\"\n",
      "\tFortran 90 wrappers are saved to \"/tmp/tmpQQL61E/src.linux-x86_64-2.7/testmod-f2pywrappers2.f90\"\n",
      "\u001b[39m  adding '/tmp/tmpQQL61E/src.linux-x86_64-2.7/fortranobject.c' to sources.\u001b[0m\n",
      "\u001b[39m  adding '/tmp/tmpQQL61E/src.linux-x86_64-2.7' to include_dirs.\u001b[0m\n",
      "\u001b[39mcopying /usr/local/lib/python2.7/dist-packages/numpy/f2py/src/fortranobject.c -> /tmp/tmpQQL61E/src.linux-x86_64-2.7\u001b[0m\n",
      "\u001b[39mcopying /usr/local/lib/python2.7/dist-packages/numpy/f2py/src/fortranobject.h -> /tmp/tmpQQL61E/src.linux-x86_64-2.7\u001b[0m\n",
      "\u001b[39m  adding '/tmp/tmpQQL61E/src.linux-x86_64-2.7/testmod-f2pywrappers2.f90' to sources.\u001b[0m\n",
      "\u001b[39mbuild_src: building npy-pkg config files\u001b[0m\n",
      "\u001b[39mrunning build_ext\u001b[0m\n",
      "\u001b[39mcustomize UnixCCompiler\u001b[0m\n",
      "\u001b[39mcustomize UnixCCompiler using build_ext\u001b[0m\n",
      "\u001b[39mcustomize Gnu95FCompiler\u001b[0m\n",
      "\u001b[39mFound executable /usr/bin/gfortran\u001b[0m\n",
      "\u001b[39mcustomize Gnu95FCompiler\u001b[0m\n",
      "\u001b[39mcustomize Gnu95FCompiler using build_ext\u001b[0m\n",
      "\u001b[39mbuilding 'testmod' extension\u001b[0m\n",
      "\u001b[39mcompiling C sources\u001b[0m\n",
      "\u001b[39mC compiler: x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -fPIC\n",
      "\u001b[0m\n",
      "\u001b[39mcreating /tmp/tmpQQL61E/tmp\u001b[0m\n",
      "\u001b[39mcreating /tmp/tmpQQL61E/tmp/tmpQQL61E\u001b[0m\n",
      "\u001b[39mcreating /tmp/tmpQQL61E/tmp/tmpQQL61E/src.linux-x86_64-2.7\u001b[0m\n",
      "\u001b[39mcompile options: '-I/tmp/tmpQQL61E/src.linux-x86_64-2.7 -I/usr/local/lib/python2.7/dist-packages/numpy/core/include -I/usr/include/python2.7 -c'\u001b[0m\n",
      "\u001b[39mx86_64-linux-gnu-gcc: /tmp/tmpQQL61E/src.linux-x86_64-2.7/fortranobject.c\u001b[0m\n",
      "In file included from /usr/local/lib/python2.7/dist-packages/numpy/core/include/numpy/ndarraytypes.h:1804:0,\n",
      "                 from /usr/local/lib/python2.7/dist-packages/numpy/core/include/numpy/ndarrayobject.h:17,\n",
      "                 from /usr/local/lib/python2.7/dist-packages/numpy/core/include/numpy/arrayobject.h:4,\n",
      "                 from /tmp/tmpQQL61E/src.linux-x86_64-2.7/fortranobject.h:13,\n",
      "                 from /tmp/tmpQQL61E/src.linux-x86_64-2.7/fortranobject.c:2:\n",
      "/usr/local/lib/python2.7/dist-packages/numpy/core/include/numpy/npy_1_7_deprecated_api.h:15:2: warning: #warning \"Using deprecated NumPy API, disable it by \" \"#defining NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION\" [-Wcpp]\n",
      " #warning \"Using deprecated NumPy API, disable it by \" \\\n",
      "  ^\n",
      "\u001b[39mx86_64-linux-gnu-gcc: /tmp/tmpQQL61E/src.linux-x86_64-2.7/testmodmodule.c\u001b[0m\n",
      "In file included from /usr/local/lib/python2.7/dist-packages/numpy/core/include/numpy/ndarraytypes.h:1804:0,\n",
      "                 from /usr/local/lib/python2.7/dist-packages/numpy/core/include/numpy/ndarrayobject.h:17,\n",
      "                 from /usr/local/lib/python2.7/dist-packages/numpy/core/include/numpy/arrayobject.h:4,\n",
      "                 from /tmp/tmpQQL61E/src.linux-x86_64-2.7/fortranobject.h:13,\n",
      "                 from /tmp/tmpQQL61E/src.linux-x86_64-2.7/testmodmodule.c:18:\n",
      "/usr/local/lib/python2.7/dist-packages/numpy/core/include/numpy/npy_1_7_deprecated_api.h:15:2: warning: #warning \"Using deprecated NumPy API, disable it by \" \"#defining NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION\" [-Wcpp]\n",
      " #warning \"Using deprecated NumPy API, disable it by \" \\\n",
      "  ^\n",
      "/tmp/tmpQQL61E/src.linux-x86_64-2.7/testmodmodule.c:104:12: warning: ‘f2py_size’ defined but not used [-Wunused-function]\n",
      " static int f2py_size(PyArrayObject* var, ...)\n",
      "            ^\n",
      "\u001b[39mcompiling Fortran 90 module sources\u001b[0m\n",
      "\u001b[39mFortran f77 compiler: /usr/bin/gfortran -Wall -g -ffixed-form -fno-second-underscore -fPIC -O3 -funroll-loops\n",
      "Fortran f90 compiler: /usr/bin/gfortran -Wall -g -fno-second-underscore -fPIC -O3 -funroll-loops\n",
      "Fortran fix compiler: /usr/bin/gfortran -Wall -g -ffixed-form -fno-second-underscore -Wall -g -fno-second-underscore -fPIC -O3 -funroll-loops\u001b[0m\n",
      "\u001b[39mcompile options: '-I/tmp/tmpQQL61E/src.linux-x86_64-2.7 -I/usr/local/lib/python2.7/dist-packages/numpy/core/include -I/usr/include/python2.7 -c'\n",
      "extra options: '-J/tmp/tmpQQL61E/ -I/tmp/tmpQQL61E/'\u001b[0m\n",
      "\u001b[39mgfortran:f90: testmod.f90\u001b[0m\n",
      "\u001b[39mcompiling Fortran sources\u001b[0m\n",
      "\u001b[39mFortran f77 compiler: /usr/bin/gfortran -Wall -g -ffixed-form -fno-second-underscore -fPIC -O3 -funroll-loops\n",
      "Fortran f90 compiler: /usr/bin/gfortran -Wall -g -fno-second-underscore -fPIC -O3 -funroll-loops\n",
      "Fortran fix compiler: /usr/bin/gfortran -Wall -g -ffixed-form -fno-second-underscore -Wall -g -fno-second-underscore -fPIC -O3 -funroll-loops\u001b[0m\n",
      "\u001b[39mcompile options: '-I/tmp/tmpQQL61E/src.linux-x86_64-2.7 -I/usr/local/lib/python2.7/dist-packages/numpy/core/include -I/usr/include/python2.7 -c'\n",
      "extra options: '-J/tmp/tmpQQL61E/ -I/tmp/tmpQQL61E/'\u001b[0m\n",
      "\u001b[39mgfortran:f90: /tmp/tmpQQL61E/src.linux-x86_64-2.7/testmod-f2pywrappers2.f90\u001b[0m\n",
      "\u001b[39m/usr/bin/gfortran -Wall -g -Wall -g -shared /tmp/tmpQQL61E/tmp/tmpQQL61E/src.linux-x86_64-2.7/testmodmodule.o /tmp/tmpQQL61E/tmp/tmpQQL61E/src.linux-x86_64-2.7/fortranobject.o /tmp/tmpQQL61E/testmod.o /tmp/tmpQQL61E/tmp/tmpQQL61E/src.linux-x86_64-2.7/testmod-f2pywrappers2.o -lgfortran -o ./testmod.so\u001b[0m\n",
      "Removing build directory /tmp/tmpQQL61E\n"
     ]
    }
   ],
   "source": [
    "!f2py -c -m testmod testmod.f90"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "import testmod"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Populating the interactive namespace from numpy and matplotlib\n"
     ]
    }
   ],
   "source": [
    "%pylab inline"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "a = randn(17,34)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "reload(testmod); testmod.testmod.pdims(a)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": []
  }
 ],
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