Merge pull request #26 from pythonsd/part4-sets

added sets optional

Author: macro1

part-4.ipynb

@@ -1,7 +1,7 @@
 {
  "metadata": {
   "name": "",
-  "signature": "sha256:57da39b42fe7452dcc70302cd9a783c3a0c4c707ecf5977e607f1ed08f3b755f"
+  "signature": "sha256:40f96dd4a9a68767b80bf16809c2b3aebd08f6893eb2d01994fd18e611864f26"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -392,6 +392,25 @@
      "metadata": {},
      "outputs": []
     },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "It's also possible to loop through the keys and values of a dictionary using the items method.\n",
+      "Let's loop through the words dictionary and see how this works:"
+     ]
+    },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "for key, value in words.items():\n",
+      "    print(key, value)"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": []
+    },
     {
      "cell_type": "markdown",
      "metadata": {},