added statement describing first list comprehension example, squared_numbers

Author: Rise Riyo

part-4.ipynb

@@ -1,7 +1,7 @@
 {
  "metadata": {
   "name": "",
-  "signature": "sha256:cc99296d9dd44c36671918c973d625cd8d0fe7b970a61ec7421d066817a07826"
+  "signature": "sha256:b02dd13be9c0f96660878e4759dcf7b7da0240b3dd4bd44e2891d8034d7299a9"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -106,7 +106,8 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": []
+     "outputs": [],
+     "prompt_number": 6
     },
     {
      "cell_type": "code",
@@ -118,6 +119,13 @@
      "metadata": {},
      "outputs": []
     },
+    {
+     "cell_type": "markdown",
+     "metadata": {},
+     "source": [
+      "Note how our list comprehension is written within the brackets: The for-loop statement is written at the end whereas the action inside of the for-loop is written first: n * n"
+     ]
+    },
     {
      "cell_type": "markdown",
      "metadata": {},