Trying to profile cython instance methods line by line

instance-method-line-profiling.ipynb

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    {
     "name": "stdout",
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     "text": [
      "The cython extension is already loaded. To reload it, use:\n",
      "  %reload_ext cython\n"
     ]
    }
   ],
   "source": [
    "%load_ext cython\n",
    "import line_profiler"
   ]
  },
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   "cell_type": "code",
   "execution_count": 7,
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   "source": [
    "%%cython\n",
    "# distutils: define_macros=CYTHON_TRACE_NOGIL=1\n",
    "# cython: linetrace=True\n",
    "# cython: binding=True\n",
    "\n",
    "def cumulative_sum(int n):\n",
    "    cdef int s=0, i\n",
    "    for i in range(n):\n",
    "        s += i\n",
    "        \n",
    "    return s\n",
    "\n",
    "\n",
    "cdef class Test(object):\n",
    "    def cumulative_sum(self, int n):\n",
    "        cdef int s=0, i\n",
    "        for i in range(n):\n",
    "            s += i\n",
    "\n",
    "        return s"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Timer unit: 1e-06 s\n",
      "\n",
      "Total time: 2.9e-05 s\n",
      "File: /Users/tillhoffmann/.ipython/cython/_cython_magic_3fe78af381a9aa1dacad9dc0e5829b44.pyx\n",
      "Function: cumulative_sum at line 5\n",
      "\n",
      "Line #      Hits         Time  Per Hit   % Time  Line Contents\n",
      "==============================================================\n",
      "     5                                           def cumulative_sum(int n):\n",
      "     6         1            1      1.0      3.4      cdef int s=0, i\n",
      "     7         1            1      1.0      3.4      for i in range(n):\n",
      "     8       100           27      0.3     93.1          s += i\n",
      "     9                                                   \n",
      "    10         1            0      0.0      0.0      return s\n",
      "\n"
     ]
    }
   ],
   "source": [
    "#Print profiling statistics using the `line_profiler` API\n",
    "profile = line_profiler.LineProfiler(cumulative_sum)\n",
    "profile.runcall(cumulative_sum, 100)\n",
    "profile.print_stats()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Timer unit: 1e-06 s\n",
      "\n"
     ]
    },
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "/usr/local/lib/python2.7/site-packages/ipykernel/__main__.py:3: UserWarning: Could not extract a code object for the object <built-in method cumulative_sum of _cython_magic_3fe78af381a9aa1dacad9dc0e5829b44.Test object at 0x1068b66d0>\n",
      "  app.launch_new_instance()\n"
     ]
    }
   ],
   "source": [
    "#Print profiling statistics using the `line_profiler` API\n",
    "test = Test()\n",
    "profile = line_profiler.LineProfiler(test.cumulative_sum)\n",
    "profile.runcall(test.cumulative_sum, 100)\n",
    "profile.print_stats()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "hasattr(cumulative_sum, '__code__'): True\n",
      "hasattr(test.cumulative_sum, '__code__'): False\n"
     ]
    }
   ],
   "source": [
    "print \"hasattr(cumulative_sum, '__code__'): {}\".format(hasattr(cumulative_sum, '__code__'))\n",
    "print \"hasattr(test.cumulative_sum, '__code__'): {}\".format(hasattr(test.cumulative_sum, '__code__'))"
   ]
  }
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I was wondering if you have had any luck getting this to work since you posted it? I'm having the exact same problem.