Provide the notebook being imported with "get_ipython"

examples/Notebook/Importing Notebooks.ipynb

@@ -39,6 +39,7 b''
    },
    "outputs": [],
    "source": [
+    "from IPython import get_ipython\n",
     "from IPython.nbformat import current\n",
     "from IPython.core.interactiveshell import InteractiveShell"
    ]
@@ -138,6 +139,7 b''
     "        mod = types.ModuleType(fullname)\n",
     "        mod.__file__ = path\n",
     "        mod.__loader__ = self\n",
+    "        mod.__dict__['get_ipython'] = get_ipython\n",
     "        sys.modules[fullname] = mod\n",
     "        \n",
     "        # extra work to ensure that magics that would affect the user_ns\n",