diff --git a/examples/Interactive Widgets/Using Interact.ipynb b/examples/Interactive Widgets/Using Interact.ipynb
index e6312f8..8374c9d 100644
--- a/examples/Interactive Widgets/Using Interact.ipynb
+++ b/examples/Interactive Widgets/Using Interact.ipynb
@@ -1,7 +1,16 @@
 {
  "metadata": {
+  "kernelspec": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "display_name": "IPython (Python 3)",
+   "language": "python",
+   "name": "python3"
+  },
   "name": "",
-  "signature": "sha256:6d8c7c51322c4911e478068e8fa8e897bd72c614096f5df110ed86d01d66001c"
+  "signature": "sha256:1bbd16f32ec50ec64d4dd646cd6868aeace8091cac989107f2026fc688ca3701"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -27,13 +36,13 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
+      "from __future__ import print_function\n",
       "from IPython.html.widgets import interact, interactive, fixed\n",
       "from IPython.html import widgets"
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [],
-     "prompt_number": 1
+     "outputs": []
     },
     {
      "cell_type": "markdown",
@@ -64,12 +73,11 @@
      "collapsed": false,
      "input": [
       "def f(x):\n",
-      "    print x"
+      "    print(x)"
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [],
-     "prompt_number": 2
+     "outputs": []
     },
     {
      "cell_type": "markdown",
@@ -86,16 +94,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "9\n"
-       ]
-      }
-     ],
-     "prompt_number": 3
+     "outputs": []
     },
     {
      "cell_type": "markdown",
@@ -114,16 +113,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "True\n"
-       ]
-      }
-     ],
-     "prompt_number": 4
+     "outputs": []
     },
     {
      "cell_type": "markdown",
@@ -140,16 +130,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "Hi there!\n"
-       ]
-      }
-     ],
-     "prompt_number": 5
+     "outputs": []
     },
     {
      "cell_type": "markdown",
@@ -164,20 +145,11 @@
      "input": [
       "@interact(x=True, y=1.0)\n",
       "def g(x, y):\n",
-      "    print x, y"
+      "    print(x, y)"
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "True 1.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 6
+     "outputs": []
     },
     {
      "cell_type": "heading",
@@ -199,12 +171,11 @@
      "collapsed": false,
      "input": [
       "def h(p, q):\n",
-      "    print p, q"
+      "    print(p, q)"
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [],
-     "prompt_number": 7
+     "outputs": []
     },
     {
      "cell_type": "markdown",
@@ -221,16 +192,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "5 20\n"
-       ]
-      }
-     ],
-     "prompt_number": 8
+     "outputs": []
     },
     {
      "cell_type": "markdown",
@@ -268,16 +230,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "10\n"
-       ]
-      }
-     ],
-     "prompt_number": 9
+     "outputs": []
     },
     {
      "cell_type": "markdown",
@@ -317,16 +270,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "2\n"
-       ]
-      }
-     ],
-     "prompt_number": 10
+     "outputs": []
     },
     {
      "cell_type": "markdown",
@@ -343,16 +287,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4\n"
-       ]
-      }
-     ],
-     "prompt_number": 11
+     "outputs": []
     },
     {
      "cell_type": "markdown",
@@ -369,16 +304,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "5.0\n"
-       ]
-      }
-     ],
-     "prompt_number": 12
+     "outputs": []
     },
     {
      "cell_type": "markdown",
@@ -395,16 +321,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "4.99\n"
-       ]
-      }
-     ],
-     "prompt_number": 13
+     "outputs": []
     },
     {
      "cell_type": "markdown",
@@ -419,20 +336,11 @@
      "input": [
       "@interact(x=(0.0,20.0,0.5))\n",
       "def h(x=5.5):\n",
-      "    print x"
+      "    print(x)"
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "5.5\n"
-       ]
-      }
-     ],
-     "prompt_number": 14
+     "outputs": []
     },
     {
      "cell_type": "markdown",
@@ -449,16 +357,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "apples\n"
-       ]
-      }
-     ],
-     "prompt_number": 15
+     "outputs": []
     },
     {
      "cell_type": "markdown",
@@ -475,16 +374,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "20\n"
-       ]
-      }
-     ],
-     "prompt_number": 16
+     "outputs": []
     },
     {
      "cell_type": "heading",
@@ -508,7 +398,7 @@
      "collapsed": false,
      "input": [
       "def f(x:True):\n",
-      "    print x"
+      "    print(x)"
      ],
      "language": "python",
      "metadata": {},
@@ -546,8 +436,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [],
-     "prompt_number": 50
+     "outputs": []
     },
     {
      "cell_type": "code",
@@ -555,12 +444,11 @@
      "input": [
       "@annotate(x=True)\n",
       "def f(x):\n",
-      "    print x"
+      "    print(x)"
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [],
-     "prompt_number": 51
+     "outputs": []
     },
     {
      "cell_type": "code",
@@ -570,16 +458,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "output_type": "stream",
-       "stream": "stdout",
-       "text": [
-        "True\n"
-       ]
-      }
-     ],
-     "prompt_number": 52
+     "outputs": []
     },
     {
      "cell_type": "heading",
@@ -612,8 +491,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [],
-     "prompt_number": 18
+     "outputs": []
     },
     {
      "cell_type": "markdown",
@@ -630,14 +508,13 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [],
-     "prompt_number": 19
+     "outputs": []
     },
     {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
-      "The widget is a `ContainerWidget`, which is a container for other widgets."
+      "The widget is a `Box`, which is a container for other widgets."
      ]
     },
     {
@@ -648,23 +525,13 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "metadata": {},
-       "output_type": "pyout",
-       "prompt_number": 20,
-       "text": [
-        "IPython.html.widgets.widget_container.ContainerWidget"
-       ]
-      }
-     ],
-     "prompt_number": 20
+     "outputs": []
     },
     {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
-      "The children of the `ContainerWidget` are two integer valued sliders produced by the widget abbreviations above."
+      "The children of the `Box` are two integer valued sliders produced by the widget abbreviations above."
      ]
     },
     {
@@ -675,18 +542,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "metadata": {},
-       "output_type": "pyout",
-       "prompt_number": 21,
-       "text": [
-        "(<IPython.html.widgets.widget_int.IntSliderWidget at 0x10557ee90>,\n",
-        " <IPython.html.widgets.widget_int.IntSliderWidget at 0x10616ebd0>)"
-       ]
-      }
-     ],
-     "prompt_number": 21
+     "outputs": []
     },
     {
      "cell_type": "markdown",
@@ -704,8 +560,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [],
-     "prompt_number": 22
+     "outputs": []
     },
     {
      "cell_type": "markdown",
@@ -724,17 +579,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "metadata": {},
-       "output_type": "pyout",
-       "prompt_number": 23,
-       "text": [
-        "{u'a': 10, u'b': 20}"
-       ]
-      }
-     ],
-     "prompt_number": 23
+     "outputs": []
     },
     {
      "cell_type": "markdown",
@@ -751,17 +596,7 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": [
-      {
-       "metadata": {},
-       "output_type": "pyout",
-       "prompt_number": 24,
-       "text": [
-        "30"
-       ]
-      }
-     ],
-     "prompt_number": 24
+     "outputs": []
     }
    ],
    "metadata": {}