refactor: removed redundant code block and renamed variables to clarify processing steps

Author: gtdang

notebooks/part0_python_intro/00_skills_test_on_basics.ipynb

@@ -46,21 +46,9 @@
    "metadata": {},
    "outputs": [],
    "source": [
+    "# Read file as a list of lines\n",
     "speech_raw = open(datapath / 'dream.txt').readlines() \n",
-    "speech = [i.strip() for i in speech_raw]"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "id": "a536464e",
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "words = []\n",
-    "for i in speech:\n",
-    "    words.append(i)\n",
-    "words"
+    "speech = [i.strip() for i in speech_raw]  # Remove white space around each line"
    ]
   },
   {
@@ -70,8 +58,9 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "words = ' '.join(words)\n",
-    "words"
+    "# join all lines as one big string\n",
+    "speech_string = ' '.join(speech)\n",
+    "speech_string"
    ]
   },
   {
@@ -82,7 +71,7 @@
    "outputs": [],
    "source": [
     "# put this all in lower case\n",
-    "words = words.lower()"
+    "speech_string = speech_string.lower()"
    ]
   },
   {
@@ -95,18 +84,20 @@
     "# get rid of punctuation using replace and replacing with empty string (e.g. '')\n",
     "punks = ['.',',',':',';','!','-']\n",
     "for cp in punks:\n",
-    "    words = words.replace(cp, '')"
+    "    speech_string = speech_string.replace(cp, '')"
    ]
   },
   {
    "cell_type": "code",
    "execution_count": null,
    "id": "b755a4ce",
-   "metadata": {},
+   "metadata": {
+    "scrolled": true
+   },
    "outputs": [],
    "source": [
     "# finally split on \"whitespace\" resulting in a list of words\n",
-    "words = words.split()\n",
+    "words = speech_string.split()\n",
     "words"
    ]
   },
@@ -292,8 +283,22 @@
   }
  ],
  "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3 (ipykernel)",
+   "language": "python",
+   "name": "python3"
+  },
   "language_info": {
-   "name": "python"
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.11.10"
   }
  },
  "nbformat": 4,