jitclass constructor

jitclass_test02.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "import numpy as np\n",
    "from numba import jitclass, typeof"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "class MyClass(object):\n",
    "    def __init__(self, value):\n",
    "        self.value = value"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "def create_my_class(value):\n",
    "    custom_cls = jitclass([('value', typeof(value))])(MyClass)\n",
    "    # may want to cache the class object for the future\n",
    "    return custom_cls(value)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "my_instance = create_my_class(np.array([0]))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "array([0])"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "my_instance.value"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "ename": "TypingError",
     "evalue": "Failed at nopython (nopython frontend)\nInternal error at <numba.typeinfer.CallConstraint object at 0x106b57dd8>:\n--%<-----------------------------------------------------------------\nTraceback (most recent call last):\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 196, in lower_block\n    self.lower_inst(inst)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 334, in lower_inst\n    signature.args[1])\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/targets/base.py\", line 597, in cast\n    return impl(self, builder, fromty, toty, val)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/targets/arrayobj.py\", line 2675, in array_to_array\n    assert toty.layout == 'A'\nAssertionError\n\nDuring handling of the above exception, another exception occurred:\n\nTraceback (most recent call last):\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typeinfer.py\", line 111, in propagate\n    constraint(typeinfer)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typeinfer.py\", line 284, in __call__\n    self.resolve(typeinfer, typevars, fnty)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typeinfer.py\", line 311, in resolve\n    sig = context.resolve_function_type(fnty, pos_args, kw_args)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typing/context.py\", line 113, in resolve_function_type\n    return func.get_call_type(self, args, kws)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/types.py\", line 1463, in get_call_type\n    return self.ctor_template(context).apply(args, kws)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typing/templates.py\", line 155, in apply\n    sig = generic(args, kws)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/jitclass/base.py\", line 178, in generic\n    template, args, kws = ctor.get_call_template(boundargs, kws)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/dispatcher.py\", line 143, in get_call_template\n    self.compile(tuple(args))\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/dispatcher.py\", line 350, in compile\n    flags=flags, locals=self.locals)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 663, in compile_extra\n    return pipeline.compile_extra(func)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 364, in compile_extra\n    return self.compile_bytecode(bc, func_attr=self.func_attr)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 373, in compile_bytecode\n    return self._compile_bytecode()\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 650, in _compile_bytecode\n    return pm.run(self.status)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 251, in run\n    raise patched_exception\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 243, in run\n    res = stage()\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 604, in stage_nopython_backend\n    return self._backend(lowerfn, objectmode=False)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 557, in _backend\n    lowered = lowerfn()\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 544, in backend_nopython_mode\n    self.flags)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 792, in native_lowering_stage\n    lower.lower()\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 123, in lower\n    self.lower_normal_function(self.fndesc)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 158, in lower_normal_function\n    entry_block_tail = self.lower_function_body()\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 183, in lower_function_body\n    self.lower_block(block)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 201, in lower_block\n    raise LoweringError(msg, inst.loc)\nnumba.errors.LoweringError: Failed at nopython (nopython mode backend)\nInternal error:\nAssertionError: \nFile \"<ipython-input-2-52286d75f1ed>\", line 3\n--%<-----------------------------------------------------------------\n\nFile \"<string>\", line 3",
     "output_type": "error",
     "traceback": [
      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[0;31mTypingError\u001b[0m                               Traceback (most recent call last)",
      "\u001b[0;32m<ipython-input-6-e5131887eef6>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mmy_instance2\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mcreate_my_class\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mnp\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0marray\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0;36m0.\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;32m<ipython-input-3-50c22779bb50>\u001b[0m in \u001b[0;36mcreate_my_class\u001b[0;34m(value)\u001b[0m\n\u001b[1;32m      2\u001b[0m     \u001b[0mcustom_cls\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mjitclass\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m'value'\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mtypeof\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mvalue\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mMyClass\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      3\u001b[0m     \u001b[0;31m# may want to cache the class object for the future\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 4\u001b[0;31m     \u001b[0;32mreturn\u001b[0m \u001b[0mcustom_cls\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mvalue\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/jitclass/base.py\u001b[0m in \u001b[0;36m__call__\u001b[0;34m(cls, *args, **kwargs)\u001b[0m\n\u001b[1;32m     89\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m     90\u001b[0m     \u001b[0;32mdef\u001b[0m \u001b[0m__call__\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mcls\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m*\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m**\u001b[0m\u001b[0mkwargs\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m---> 91\u001b[0;31m         \u001b[0;32mreturn\u001b[0m \u001b[0mcls\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_ctor\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m*\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m**\u001b[0m\u001b[0mkwargs\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m     92\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m     93\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/dispatcher.py\u001b[0m in \u001b[0;36m_compile_for_args\u001b[0;34m(self, *args, **kws)\u001b[0m\n\u001b[1;32m    170\u001b[0m         \u001b[0;32massert\u001b[0m \u001b[0;32mnot\u001b[0m \u001b[0mkws\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    171\u001b[0m         \u001b[0msig\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mtuple\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mtypeof_pyval\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0ma\u001b[0m\u001b[0;34m)\u001b[0m \u001b[0;32mfor\u001b[0m \u001b[0ma\u001b[0m \u001b[0;32min\u001b[0m \u001b[0margs\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 172\u001b[0;31m         \u001b[0;32mreturn\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mcompile\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0msig\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    173\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    174\u001b[0m     \u001b[0;32mdef\u001b[0m \u001b[0minspect_llvm\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0msignature\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0;32mNone\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/dispatcher.py\u001b[0m in \u001b[0;36mcompile\u001b[0;34m(self, sig)\u001b[0m\n\u001b[1;32m    348\u001b[0m                                           \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mpy_func\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    349\u001b[0m                                           \u001b[0margs\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mreturn_type\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mreturn_type\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 350\u001b[0;31m                                           flags=flags, locals=self.locals)\n\u001b[0m\u001b[1;32m    351\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    352\u001b[0m             \u001b[0;31m# Check typing error if object mode is used\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\u001b[0m in \u001b[0;36mcompile_extra\u001b[0;34m(typingctx, targetctx, func, args, return_type, flags, locals, library)\u001b[0m\n\u001b[1;32m    661\u001b[0m     pipeline = Pipeline(typingctx, targetctx, library,\n\u001b[1;32m    662\u001b[0m                         args, return_type, flags, locals)\n\u001b[0;32m--> 663\u001b[0;31m     \u001b[0;32mreturn\u001b[0m \u001b[0mpipeline\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mcompile_extra\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mfunc\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    664\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    665\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\u001b[0m in \u001b[0;36mcompile_extra\u001b[0;34m(self, func)\u001b[0m\n\u001b[1;32m    362\u001b[0m                 \u001b[0;32mraise\u001b[0m \u001b[0me\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    363\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 364\u001b[0;31m         \u001b[0;32mreturn\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mcompile_bytecode\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mbc\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mfunc_attr\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mfunc_attr\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    365\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    366\u001b[0m     def compile_bytecode(self, bc, lifted=(), lifted_from=None,\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\u001b[0m in \u001b[0;36mcompile_bytecode\u001b[0;34m(self, bc, lifted, lifted_from, func_attr)\u001b[0m\n\u001b[1;32m    371\u001b[0m         \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mlifted_from\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mlifted_from\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    372\u001b[0m         \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mfunc_attr\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mfunc_attr\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 373\u001b[0;31m         \u001b[0;32mreturn\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_compile_bytecode\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    374\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    375\u001b[0m     \u001b[0;32mdef\u001b[0m \u001b[0mcompile_internal\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mbc\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mfunc_attr\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mDEFAULT_FUNCTION_ATTRIBUTES\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\u001b[0m in \u001b[0;36m_compile_bytecode\u001b[0;34m(self)\u001b[0m\n\u001b[1;32m    648\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    649\u001b[0m         \u001b[0mpm\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mfinalize\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 650\u001b[0;31m         \u001b[0;32mreturn\u001b[0m \u001b[0mpm\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mrun\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mstatus\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    651\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    652\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\u001b[0m in \u001b[0;36mrun\u001b[0;34m(self, status)\u001b[0m\n\u001b[1;32m    249\u001b[0m                     \u001b[0;31m# No more fallback pipelines?\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    250\u001b[0m                     \u001b[0;32mif\u001b[0m \u001b[0mis_final_pipeline\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 251\u001b[0;31m                         \u001b[0;32mraise\u001b[0m \u001b[0mpatched_exception\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    252\u001b[0m                     \u001b[0;31m# Go to next fallback pipeline\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    253\u001b[0m                     \u001b[0;32melse\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\u001b[0m in \u001b[0;36mrun\u001b[0;34m(self, status)\u001b[0m\n\u001b[1;32m    241\u001b[0m             \u001b[0;32mfor\u001b[0m \u001b[0mstage\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mstage_name\u001b[0m \u001b[0;32min\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mpipeline_stages\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0mpipeline_name\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    242\u001b[0m                 \u001b[0;32mtry\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 243\u001b[0;31m                     \u001b[0mres\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mstage\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    244\u001b[0m                 \u001b[0;32mexcept\u001b[0m \u001b[0m_EarlyPipelineCompletion\u001b[0m \u001b[0;32mas\u001b[0m \u001b[0me\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    245\u001b[0m                     \u001b[0;32mreturn\u001b[0m \u001b[0me\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mresult\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\u001b[0m in \u001b[0;36mstage_nopython_frontend\u001b[0;34m(self)\u001b[0m\n\u001b[1;32m    459\u001b[0m                 \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    460\u001b[0m                 \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mreturn_type\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 461\u001b[0;31m                 self.locals)\n\u001b[0m\u001b[1;32m    462\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    463\u001b[0m         with self.fallback_context('Function \"%s\" has invalid return type'\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\u001b[0m in \u001b[0;36mtype_inference_stage\u001b[0;34m(typingctx, interp, args, return_type, locals)\u001b[0m\n\u001b[1;32m    776\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    777\u001b[0m     \u001b[0minfer\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mbuild_constraint\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 778\u001b[0;31m     \u001b[0minfer\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mpropagate\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    779\u001b[0m     \u001b[0mtypemap\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mrestype\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mcalltypes\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0minfer\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0munify\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    780\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typeinfer.py\u001b[0m in \u001b[0;36mpropagate\u001b[0;34m(self)\u001b[0m\n\u001b[1;32m    567\u001b[0m             \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mdebug\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mpropagate_finished\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    568\u001b[0m         \u001b[0;32mif\u001b[0m \u001b[0merrors\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 569\u001b[0;31m             \u001b[0;32mraise\u001b[0m \u001b[0merrors\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0;36m0\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    570\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    571\u001b[0m     \u001b[0;32mdef\u001b[0m \u001b[0madd_type\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mvar\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mtp\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0munless_locked\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0;32mFalse\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;31mTypingError\u001b[0m: Failed at nopython (nopython frontend)\nInternal error at <numba.typeinfer.CallConstraint object at 0x106b57dd8>:\n--%<-----------------------------------------------------------------\nTraceback (most recent call last):\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 196, in lower_block\n    self.lower_inst(inst)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 334, in lower_inst\n    signature.args[1])\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/targets/base.py\", line 597, in cast\n    return impl(self, builder, fromty, toty, val)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/targets/arrayobj.py\", line 2675, in array_to_array\n    assert toty.layout == 'A'\nAssertionError\n\nDuring handling of the above exception, another exception occurred:\n\nTraceback (most recent call last):\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typeinfer.py\", line 111, in propagate\n    constraint(typeinfer)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typeinfer.py\", line 284, in __call__\n    self.resolve(typeinfer, typevars, fnty)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typeinfer.py\", line 311, in resolve\n    sig = context.resolve_function_type(fnty, pos_args, kw_args)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typing/context.py\", line 113, in resolve_function_type\n    return func.get_call_type(self, args, kws)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/types.py\", line 1463, in get_call_type\n    return self.ctor_template(context).apply(args, kws)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typing/templates.py\", line 155, in apply\n    sig = generic(args, kws)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/jitclass/base.py\", line 178, in generic\n    template, args, kws = ctor.get_call_template(boundargs, kws)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/dispatcher.py\", line 143, in get_call_template\n    self.compile(tuple(args))\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/dispatcher.py\", line 350, in compile\n    flags=flags, locals=self.locals)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 663, in compile_extra\n    return pipeline.compile_extra(func)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 364, in compile_extra\n    return self.compile_bytecode(bc, func_attr=self.func_attr)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 373, in compile_bytecode\n    return self._compile_bytecode()\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 650, in _compile_bytecode\n    return pm.run(self.status)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 251, in run\n    raise patched_exception\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 243, in run\n    res = stage()\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 604, in stage_nopython_backend\n    return self._backend(lowerfn, objectmode=False)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 557, in _backend\n    lowered = lowerfn()\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 544, in backend_nopython_mode\n    self.flags)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 792, in native_lowering_stage\n    lower.lower()\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 123, in lower\n    self.lower_normal_function(self.fndesc)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 158, in lower_normal_function\n    entry_block_tail = self.lower_function_body()\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 183, in lower_function_body\n    self.lower_block(block)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 201, in lower_block\n    raise LoweringError(msg, inst.loc)\nnumba.errors.LoweringError: Failed at nopython (nopython mode backend)\nInternal error:\nAssertionError: \nFile \"<ipython-input-2-52286d75f1ed>\", line 3\n--%<-----------------------------------------------------------------\n\nFile \"<string>\", line 3"
     ]
    }
   ],
   "source": [
    "my_instance2 = create_my_class(np.array([0.]))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "class MyClass(object):\n",
    "    def __init__(self, value):\n",
    "        self.value = value"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "my_instance3 = create_my_class(np.array([0.]))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "array([ 0.])"
      ]
     },
     "execution_count": 9,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "my_instance3.value"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "ename": "TypingError",
     "evalue": "Failed at nopython (nopython frontend)\nInternal error at <numba.typeinfer.CallConstraint object at 0x106b1d898>:\n--%<-----------------------------------------------------------------\nTraceback (most recent call last):\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 196, in lower_block\n    self.lower_inst(inst)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 334, in lower_inst\n    signature.args[1])\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/targets/base.py\", line 597, in cast\n    return impl(self, builder, fromty, toty, val)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/targets/arrayobj.py\", line 2675, in array_to_array\n    assert toty.layout == 'A'\nAssertionError\n\nDuring handling of the above exception, another exception occurred:\n\nTraceback (most recent call last):\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typeinfer.py\", line 111, in propagate\n    constraint(typeinfer)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typeinfer.py\", line 284, in __call__\n    self.resolve(typeinfer, typevars, fnty)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typeinfer.py\", line 311, in resolve\n    sig = context.resolve_function_type(fnty, pos_args, kw_args)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typing/context.py\", line 113, in resolve_function_type\n    return func.get_call_type(self, args, kws)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/types.py\", line 1463, in get_call_type\n    return self.ctor_template(context).apply(args, kws)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typing/templates.py\", line 155, in apply\n    sig = generic(args, kws)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/jitclass/base.py\", line 178, in generic\n    template, args, kws = ctor.get_call_template(boundargs, kws)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/dispatcher.py\", line 143, in get_call_template\n    self.compile(tuple(args))\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/dispatcher.py\", line 350, in compile\n    flags=flags, locals=self.locals)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 663, in compile_extra\n    return pipeline.compile_extra(func)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 364, in compile_extra\n    return self.compile_bytecode(bc, func_attr=self.func_attr)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 373, in compile_bytecode\n    return self._compile_bytecode()\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 650, in _compile_bytecode\n    return pm.run(self.status)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 251, in run\n    raise patched_exception\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 243, in run\n    res = stage()\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 604, in stage_nopython_backend\n    return self._backend(lowerfn, objectmode=False)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 557, in _backend\n    lowered = lowerfn()\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 544, in backend_nopython_mode\n    self.flags)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 792, in native_lowering_stage\n    lower.lower()\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 123, in lower\n    self.lower_normal_function(self.fndesc)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 158, in lower_normal_function\n    entry_block_tail = self.lower_function_body()\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 183, in lower_function_body\n    self.lower_block(block)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 201, in lower_block\n    raise LoweringError(msg, inst.loc)\nnumba.errors.LoweringError: Failed at nopython (nopython mode backend)\nInternal error:\nAssertionError: \nFile \"<ipython-input-7-52286d75f1ed>\", line 3\n--%<-----------------------------------------------------------------\n\nFile \"<string>\", line 3",
     "output_type": "error",
     "traceback": [
      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[0;31mTypingError\u001b[0m                               Traceback (most recent call last)",
      "\u001b[0;32m<ipython-input-10-6189a28097d4>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mmy_instance4\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mcreate_my_class\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mnp\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0marray\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0;36m0\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;32m<ipython-input-3-50c22779bb50>\u001b[0m in \u001b[0;36mcreate_my_class\u001b[0;34m(value)\u001b[0m\n\u001b[1;32m      2\u001b[0m     \u001b[0mcustom_cls\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mjitclass\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m'value'\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mtypeof\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mvalue\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mMyClass\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      3\u001b[0m     \u001b[0;31m# may want to cache the class object for the future\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 4\u001b[0;31m     \u001b[0;32mreturn\u001b[0m \u001b[0mcustom_cls\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mvalue\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/jitclass/base.py\u001b[0m in \u001b[0;36m__call__\u001b[0;34m(cls, *args, **kwargs)\u001b[0m\n\u001b[1;32m     89\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m     90\u001b[0m     \u001b[0;32mdef\u001b[0m \u001b[0m__call__\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mcls\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m*\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m**\u001b[0m\u001b[0mkwargs\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m---> 91\u001b[0;31m         \u001b[0;32mreturn\u001b[0m \u001b[0mcls\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_ctor\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m*\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m**\u001b[0m\u001b[0mkwargs\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m     92\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m     93\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/dispatcher.py\u001b[0m in \u001b[0;36m_compile_for_args\u001b[0;34m(self, *args, **kws)\u001b[0m\n\u001b[1;32m    170\u001b[0m         \u001b[0;32massert\u001b[0m \u001b[0;32mnot\u001b[0m \u001b[0mkws\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    171\u001b[0m         \u001b[0msig\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mtuple\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mtypeof_pyval\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0ma\u001b[0m\u001b[0;34m)\u001b[0m \u001b[0;32mfor\u001b[0m \u001b[0ma\u001b[0m \u001b[0;32min\u001b[0m \u001b[0margs\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 172\u001b[0;31m         \u001b[0;32mreturn\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mcompile\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0msig\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    173\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    174\u001b[0m     \u001b[0;32mdef\u001b[0m \u001b[0minspect_llvm\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0msignature\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0;32mNone\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/dispatcher.py\u001b[0m in \u001b[0;36mcompile\u001b[0;34m(self, sig)\u001b[0m\n\u001b[1;32m    348\u001b[0m                                           \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mpy_func\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    349\u001b[0m                                           \u001b[0margs\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mreturn_type\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mreturn_type\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 350\u001b[0;31m                                           flags=flags, locals=self.locals)\n\u001b[0m\u001b[1;32m    351\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    352\u001b[0m             \u001b[0;31m# Check typing error if object mode is used\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\u001b[0m in \u001b[0;36mcompile_extra\u001b[0;34m(typingctx, targetctx, func, args, return_type, flags, locals, library)\u001b[0m\n\u001b[1;32m    661\u001b[0m     pipeline = Pipeline(typingctx, targetctx, library,\n\u001b[1;32m    662\u001b[0m                         args, return_type, flags, locals)\n\u001b[0;32m--> 663\u001b[0;31m     \u001b[0;32mreturn\u001b[0m \u001b[0mpipeline\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mcompile_extra\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mfunc\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    664\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    665\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\u001b[0m in \u001b[0;36mcompile_extra\u001b[0;34m(self, func)\u001b[0m\n\u001b[1;32m    362\u001b[0m                 \u001b[0;32mraise\u001b[0m \u001b[0me\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    363\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 364\u001b[0;31m         \u001b[0;32mreturn\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mcompile_bytecode\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mbc\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mfunc_attr\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mfunc_attr\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    365\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    366\u001b[0m     def compile_bytecode(self, bc, lifted=(), lifted_from=None,\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\u001b[0m in \u001b[0;36mcompile_bytecode\u001b[0;34m(self, bc, lifted, lifted_from, func_attr)\u001b[0m\n\u001b[1;32m    371\u001b[0m         \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mlifted_from\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mlifted_from\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    372\u001b[0m         \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mfunc_attr\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mfunc_attr\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 373\u001b[0;31m         \u001b[0;32mreturn\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_compile_bytecode\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    374\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    375\u001b[0m     \u001b[0;32mdef\u001b[0m \u001b[0mcompile_internal\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mbc\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mfunc_attr\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mDEFAULT_FUNCTION_ATTRIBUTES\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\u001b[0m in \u001b[0;36m_compile_bytecode\u001b[0;34m(self)\u001b[0m\n\u001b[1;32m    648\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    649\u001b[0m         \u001b[0mpm\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mfinalize\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 650\u001b[0;31m         \u001b[0;32mreturn\u001b[0m \u001b[0mpm\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mrun\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mstatus\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    651\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    652\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\u001b[0m in \u001b[0;36mrun\u001b[0;34m(self, status)\u001b[0m\n\u001b[1;32m    249\u001b[0m                     \u001b[0;31m# No more fallback pipelines?\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    250\u001b[0m                     \u001b[0;32mif\u001b[0m \u001b[0mis_final_pipeline\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 251\u001b[0;31m                         \u001b[0;32mraise\u001b[0m \u001b[0mpatched_exception\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    252\u001b[0m                     \u001b[0;31m# Go to next fallback pipeline\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    253\u001b[0m                     \u001b[0;32melse\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\u001b[0m in \u001b[0;36mrun\u001b[0;34m(self, status)\u001b[0m\n\u001b[1;32m    241\u001b[0m             \u001b[0;32mfor\u001b[0m \u001b[0mstage\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mstage_name\u001b[0m \u001b[0;32min\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mpipeline_stages\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0mpipeline_name\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    242\u001b[0m                 \u001b[0;32mtry\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 243\u001b[0;31m                     \u001b[0mres\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mstage\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    244\u001b[0m                 \u001b[0;32mexcept\u001b[0m \u001b[0m_EarlyPipelineCompletion\u001b[0m \u001b[0;32mas\u001b[0m \u001b[0me\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    245\u001b[0m                     \u001b[0;32mreturn\u001b[0m \u001b[0me\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mresult\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\u001b[0m in \u001b[0;36mstage_nopython_frontend\u001b[0;34m(self)\u001b[0m\n\u001b[1;32m    459\u001b[0m                 \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0margs\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    460\u001b[0m                 \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mreturn_type\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 461\u001b[0;31m                 self.locals)\n\u001b[0m\u001b[1;32m    462\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    463\u001b[0m         with self.fallback_context('Function \"%s\" has invalid return type'\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\u001b[0m in \u001b[0;36mtype_inference_stage\u001b[0;34m(typingctx, interp, args, return_type, locals)\u001b[0m\n\u001b[1;32m    776\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    777\u001b[0m     \u001b[0minfer\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mbuild_constraint\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 778\u001b[0;31m     \u001b[0minfer\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mpropagate\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    779\u001b[0m     \u001b[0mtypemap\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mrestype\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mcalltypes\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0minfer\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0munify\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    780\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;32m//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typeinfer.py\u001b[0m in \u001b[0;36mpropagate\u001b[0;34m(self)\u001b[0m\n\u001b[1;32m    567\u001b[0m             \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mdebug\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mpropagate_finished\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    568\u001b[0m         \u001b[0;32mif\u001b[0m \u001b[0merrors\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 569\u001b[0;31m             \u001b[0;32mraise\u001b[0m \u001b[0merrors\u001b[0m\u001b[0;34m[\u001b[0m\u001b[0;36m0\u001b[0m\u001b[0;34m]\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    570\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    571\u001b[0m     \u001b[0;32mdef\u001b[0m \u001b[0madd_type\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mself\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mvar\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mtp\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0munless_locked\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0;32mFalse\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;31mTypingError\u001b[0m: Failed at nopython (nopython frontend)\nInternal error at <numba.typeinfer.CallConstraint object at 0x106b1d898>:\n--%<-----------------------------------------------------------------\nTraceback (most recent call last):\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 196, in lower_block\n    self.lower_inst(inst)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 334, in lower_inst\n    signature.args[1])\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/targets/base.py\", line 597, in cast\n    return impl(self, builder, fromty, toty, val)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/targets/arrayobj.py\", line 2675, in array_to_array\n    assert toty.layout == 'A'\nAssertionError\n\nDuring handling of the above exception, another exception occurred:\n\nTraceback (most recent call last):\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typeinfer.py\", line 111, in propagate\n    constraint(typeinfer)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typeinfer.py\", line 284, in __call__\n    self.resolve(typeinfer, typevars, fnty)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typeinfer.py\", line 311, in resolve\n    sig = context.resolve_function_type(fnty, pos_args, kw_args)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typing/context.py\", line 113, in resolve_function_type\n    return func.get_call_type(self, args, kws)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/types.py\", line 1463, in get_call_type\n    return self.ctor_template(context).apply(args, kws)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/typing/templates.py\", line 155, in apply\n    sig = generic(args, kws)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/jitclass/base.py\", line 178, in generic\n    template, args, kws = ctor.get_call_template(boundargs, kws)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/dispatcher.py\", line 143, in get_call_template\n    self.compile(tuple(args))\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/dispatcher.py\", line 350, in compile\n    flags=flags, locals=self.locals)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 663, in compile_extra\n    return pipeline.compile_extra(func)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 364, in compile_extra\n    return self.compile_bytecode(bc, func_attr=self.func_attr)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 373, in compile_bytecode\n    return self._compile_bytecode()\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 650, in _compile_bytecode\n    return pm.run(self.status)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 251, in run\n    raise patched_exception\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 243, in run\n    res = stage()\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 604, in stage_nopython_backend\n    return self._backend(lowerfn, objectmode=False)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 557, in _backend\n    lowered = lowerfn()\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 544, in backend_nopython_mode\n    self.flags)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/compiler.py\", line 792, in native_lowering_stage\n    lower.lower()\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 123, in lower\n    self.lower_normal_function(self.fndesc)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 158, in lower_normal_function\n    entry_block_tail = self.lower_function_body()\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 183, in lower_function_body\n    self.lower_block(block)\n  File \"//anaconda/envs/numba-dev/lib/python3.5/site-packages/numba/lowering.py\", line 201, in lower_block\n    raise LoweringError(msg, inst.loc)\nnumba.errors.LoweringError: Failed at nopython (nopython mode backend)\nInternal error:\nAssertionError: \nFile \"<ipython-input-7-52286d75f1ed>\", line 3\n--%<-----------------------------------------------------------------\n\nFile \"<string>\", line 3"
     ]
    }
   ],
   "source": [
    "my_instance4 = create_my_class(np.array([0]))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'0.22.1+283.g2f2302f'"
      ]
     },
     "execution_count": 11,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "import numba\n",
    "numba.__version__"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": []
  }
 ],
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   "name": "python3"
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  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
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