clean up, more consistent questioning

Chapter 2 - First steps.ipynb

@@ -1,7 +1,7 @@
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  "metadata": {
   "name": "",
-  "signature": "sha256:61dd41f72d99884905e5394954e7e29cc07c4cb761156899ccb69a4ccd4146bd"
+  "signature": "sha256:e373d55e4ef72c3bc815b25ea9282fdbb5e8ccfcb570fa386b1b62394e68496b"
  },
  "nbformat": 3,
  "nbformat_minor": 0,
@@ -274,7 +274,7 @@
      "cell_type": "markdown",
      "metadata": {},
      "source": [
-      "Lists in Python do not have a function `count` with which we can count how often a particular object occurs in a list. All the things you have learnt so far should enable you to write code that counts how often a certain items occurs in a list. Write some code that defines the variable `number_of_hits` and counts how often the word *in* (assigned to `item_to_count`) occurs in the the list of words called `words`."
+      "All the things you have learnt so far should enable you to write code that counts how often a certain items occurs in a list. Write some code that defines the variable `number_of_hits` and counts how often the word *in* (assigned to `item_to_count`) occurs in the the list of words called `words`."
      ]
     },
     {
@@ -380,12 +380,12 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "def count_in_list(item_to_count, list_to_search): # 1\n",
-      "    number_of_hits = 0                            # 2\n",
-      "    for item in list_to_search:                   # 3\n",
-      "        if item == item_to_count:                 # 4\n",
-      "            number_of_hits += 1                   # 5\n",
-      "    return number_of_hits                         # 6"
+      "def count_in_list(item_to_count, list_to_search): \n",
+      "    number_of_hits = 0                            \n",
+      "    for item in list_to_search:                   \n",
+      "        if item == item_to_count:                 \n",
+      "            number_of_hits += 1                   \n",
+      "    return number_of_hits                         "
      ],
      "language": "python",
      "metadata": {},
@@ -533,14 +533,14 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
-      "def counter(list_to_search):                 # 1\n",
-      "    counts = {}                              # 2\n",
-      "    for word in list_to_search:              # 3\n",
-      "        if word in counts:                   # 4\n",
-      "            counts[word] = counts[word] + 1  # 5\n",
-      "        else:                                # 6\n",
-      "            counts[word] = 1                 # 7\n",
-      "    return counts                            # 8"
+      "def counter(list_to_search):                 \n",
+      "    counts = {}                              \n",
+      "    for word in list_to_search:              \n",
+      "        if word in counts:                   \n",
+      "            counts[word] = counts[word] + 1  \n",
+      "        else:                                \n",
+      "            counts[word] = 1                 \n",
+      "    return counts                            "
      ],
      "language": "python",
      "metadata": {},
@@ -748,7 +748,7 @@
      "cell_type": "markdown",
      "metadata": {},
      "source": [
-      "*Write your answer here* (double click me)"
+      "*Double click this cell and write down your answer.*"
      ]
     },
     {
@@ -968,7 +968,6 @@
      "input": [
       "def clean_text(text):\n",
       "    # insert your code here\n",
-      "    return remove_punc(text.lower())\n",
       "    \n",
       "# The following test should print True if your code is correct \n",
       "short_text = \"Commas, as it turns out, are overestimated. Dots, however, even more so!\"\n",
@@ -992,13 +991,6 @@
      "input": [
       "woodhouse_counts = 0\n",
       "# insert your code here\n",
-      "infile = open(\"data/austen-emma.txt\")\n",
-      "text = infile.read()\n",
-      "infile.close()\n",
-      "text = clean_text(text)\n",
-      "text = text.split()\n",
-      "word_counts = counter(text)['woodhouse']\n",
-      "woodhouse_counts = word_counts\n",
       "\n",
       "# The following test should print True if your code is correct \n",
       "print(woodhouse_counts == 263)"
@@ -1076,21 +1068,20 @@
      "input": [
       "# first open and read data/austen-emma.txt. Don't forget to close the infile\n",
       "infile = open(\"data/austen-emma.txt\")\n",
-      "text = infile.read()\n",
-      "infile.close()\n",
-      "text = clean_text(text)\n",
+      "text = # read the contents of the infile\n",
+      "# close the file handler\n",
+      "# clean the text\n",
       "\n",
       "# next compute the frequency distribution using the function counter\n",
-      "frequency_distribution = counter(text.split())\n",
+      "frequency_distribution = \n",
       "\n",
       "# now open the file data/austen-frequency-distribution.txt for writing\n",
-      "outfile = open(\"data/austen-frequency-distribution.txt\", mode = 'w')\n",
+      "outfile = \n",
       "\n",
       "for word, frequency in frequency_distribution.items():\n",
       "    outfile.write(word + \";\" + str(frequency) + '\\n')\n",
       "    \n",
-      "# close the outfile\n",
-      "outfile.close()"
+      "# close the outfile"
      ],
      "language": "python",
      "metadata": {},