Add imports

Author: stefanv

lectures/numpy_scipy_quiz.ipynb

@@ -14,6 +14,22 @@
     "If you run out of exercises, there are [100 more here!](http://www.loria.fr/~rougier/teaching/numpy.100/)"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "collapsed": true
+   },
+   "outputs": [],
+   "source": [
+    "import numpy as np\n",
+    "\n",
+    "%matplotlib inline\n",
+    "import matplotlib.pyplot as plt\n",
+    "\n",
+    "import scipy"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -154,7 +170,9 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {},
+   "metadata": {
+    "collapsed": true
+   },
    "outputs": [],
    "source": [
     "# From https://commons.wikimedia.org/wiki/File:Rosenbrock_function.svg\n",
@@ -255,7 +273,9 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {},
+   "metadata": {
+    "collapsed": true
+   },
    "outputs": [],
    "source": [
     "from skimage import draw\n",
@@ -297,7 +317,9 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {},
+   "metadata": {
+    "collapsed": true
+   },
    "outputs": [],
    "source": [
     "from skimage import data, color, filters\n",
@@ -328,7 +350,9 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {},
+   "metadata": {
+    "collapsed": true
+   },
    "outputs": [],
    "source": [
     "# Visualize sampling\n",