use list comprehension instead of for-loop to keep consistent with the previous topic

Author: Rise Riyo

part-4.ipynb

@@ -1,7 +1,7 @@
 {
  "metadata": {
   "name": "",
-  "signature": "sha256:c279b3f8b75d5270e572bf063ff7315c08e1c5547ca24c870694ccddb2fb997d"
+  "signature": "sha256:438a503ded59b13e7295fbf00a26fef4b584f4309f97d9e2a2ab45c4b291eabf"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -217,7 +217,8 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": []
+     "outputs": [],
+     "prompt_number": 20
     },
     {
      "cell_type": "code",
@@ -227,7 +228,17 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": []
+     "outputs": [
+      {
+       "metadata": {},
+       "output_type": "pyout",
+       "prompt_number": 21,
+       "text": [
+        "'cat'"
+       ]
+      }
+     ],
+     "prompt_number": 21
     },
     {
      "cell_type": "markdown",
@@ -244,7 +255,17 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": []
+     "outputs": [
+      {
+       "metadata": {},
+       "output_type": "pyout",
+       "prompt_number": 22,
+       "text": [
+        "True"
+       ]
+      }
+     ],
+     "prompt_number": 22
     },
     {
      "cell_type": "markdown",
@@ -261,7 +282,17 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": []
+     "outputs": [
+      {
+       "metadata": {},
+       "output_type": "pyout",
+       "prompt_number": 23,
+       "text": [
+        "6"
+       ]
+      }
+     ],
+     "prompt_number": 23
     },
     {
      "cell_type": "markdown",
@@ -280,15 +311,49 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": []
+     "outputs": [
+      {
+       "metadata": {},
+       "output_type": "pyout",
+       "prompt_number": 24,
+       "text": [
+        "['el', 'gato', 'esta', 'en', 'la', 'casa']"
+       ]
+      }
+     ],
+     "prompt_number": 24
     },
     {
      "cell_type": "markdown",
      "metadata": {},
      "source": [
-      "Let's loop over each word in the list and translate each one."
+      "Let's loop over each word in the list and translate each one by using a list comprehension."
      ]
     },
+    {
+     "cell_type": "code",
+     "collapsed": false,
+     "input": [
+      "translated_words = [print(words[spanish_word]) for spanish_word in sentence_words]"
+     ],
+     "language": "python",
+     "metadata": {},
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "the\n",
+        "cat\n",
+        "is\n",
+        "in\n",
+        "the\n",
+        "house\n"
+       ]
+      }
+     ],
+     "prompt_number": 28
+    },
     {
      "cell_type": "code",
      "collapsed": false,
@@ -298,7 +363,21 @@
      ],
      "language": "python",
      "metadata": {},
-     "outputs": []
+     "outputs": [
+      {
+       "output_type": "stream",
+       "stream": "stdout",
+       "text": [
+        "the\n",
+        "cat\n",
+        "is\n",
+        "in\n",
+        "the\n",
+        "house\n"
+       ]
+      }
+     ],
+     "prompt_number": 25
     },
     {
      "cell_type": "markdown",