    },
    {
     "cell_type": "code",
     "execution_count": null,
     "metadata": {
      "collapsed": false
     },
     "outputs": [],
     "source": [
      "def foo(val):\n",
      "    # TODO: Implement me\n",
      "    pass"
 
</s> remove    "metadata": {
    "collapsed": false
   },
 </s> add    "metadata": {}, </s> remove    "metadata": {
    "collapsed": false
   },
 </s> add    "metadata": {}, </s> remove    "metadata": {
    "collapsed": false
   },
 </s> add    "metadata": {}, </s> remove    "metadata": {
    "collapsed": false
   },
 </s> add    "metadata": {}, </s> remove     "        assert_equal(foo(None), None)\n",
    "        assert_equal(foo(0), 0)\n",
    "        assert_equal(foo('bar'), 'bar')\n",
 </s> add     "        self.assertEqual(foo(None), None)\n",
    "        self.assertEqual(foo(0), 0)\n",
    "        self.assertEqual(foo('bar'), 'bar')\n",
   "metadata": {},
    },
    {
     "cell_type": "code",
     "execution_count": null,
   "metadata": {},
   "metadata": {},
   "metadata": {},
     "outputs": [],
     "source": [
      "def foo(val):\n",
      "    # TODO: Implement me\n",
      "    pass"
keep keep keep keep replace replace replace keep keep keep keep keep
 #273: Remove nose dependency for templates/ (#284) 
templates/foo_challenge.ipynb