Regex Book_Analysis.ipynb

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   "source": [
    "## Load the book"
   ]
  },
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   "source": [
    "with open(\"miracle_in_the_andes.txt\", \"r\") as file:\n",
    "    book = file.read()"
   ]
  },
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   "source": [
    "## [I] How many chapters?"
   ]
  },
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   "source": [
    "### with string methods"
   ]
  },
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   "id": "3622eaa7-2f29-4c05-adb5-a48ed070bff3",
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   "source": [
    "book.count(\"Chapter\")"
   ]
  },
  {
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   "source": [
    "### with regex"
   ]
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   "source": [
    "import re"
   ]
  },
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   "source": [
    "pattern = re.compile(\"Chapter [0-9]+\")\n",
    "findings = re.findall(pattern, book)\n",
    "len(findings)"
   ]
  },
  {
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   "source": [
    "## [II] Chapters found"
   ]
  },
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   "source": [
    "findings"
   ]
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   "source": [
    "### Extract the chapter titles"
   ]
  },
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   "source": [
    "#### Method 1"
   ]
  },
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     "data": {
      "text/plain": [
       "['Before',\n",
       " 'Everything Precious',\n",
       " 'A Promise',\n",
       " 'Breathe Once More',\n",
       " 'Abandoned',\n",
       " 'Tomb',\n",
       " 'East',\n",
       " 'The Opposite of Death',\n",
       " 'I See a Man',\n",
       " 'After']"
      ]
     },
     "execution_count": 5,
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     "output_type": "execute_result"
    }
   ],
   "source": [
    "import re\n",
    "pattern = re.compile(\"[a-zA-Z ,]+\\n\\n\")\n",
    "findings = re.findall(pattern, book)\n",
    "findings = [item.strip(\"\\n\\n\") for item in findings]\n",
    "findings"
   ]
  },
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   "source": [
    "#### Method 2"
   ]
  },
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       "[]"
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   ],
   "source": [
    "import re\n",
    "pattern = re.compile(\"a-zA-Z ]+\\n\\n\")\n",
    "findings = re.findall(pattern, book)\n",
    "findings"
   ]
  },
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   "source": [
    "## [III] Which are the sentences where \"owe\" was used?"
   ]
  },
  {
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      "text/plain": [
       "['We owe it to ourselves to try this before we go off blundering into the mountains and throw our lives away.',\n",
       " 'After all, considering what we’d been through, didn’t the world owe us a little fun? I told myself I was savoring life, making up for the time I’d lost on the mountain.']"
      ]
     },
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   ],
   "source": [
    "pattern = re.compile(\"[A-Z]{1}[^.]* owe[^a-zA-Z]+[^.]*.\")\n",
    "findings = re.findall(pattern, book)\n",
    "len(findings)\n",
    "findings"
   ]
  },
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   "source": [
    "## [IV] Function that finds the occurrence of any word"
   ]
  },
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   "source": [
    "def find(w):\n",
    "    pattern = re.compile(\"[a-zA-Z]+\")\n",
    "    findings = re.findall(pattern, book.lower())\n",
    "    d = {}\n",
    "    for word in findings:\n",
    "        if word in d.keys():\n",
    "            d[word] = d[word] + 1\n",
    "        else:\n",
    "            d[word] = 1\n",
    "    try:\n",
    "        return d[w]\n",
    "    except:\n",
    "        return f'The book does not contain the word \"{w}\"'"
   ]
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   "source": [
    "### Call the function"
   ]
  },
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   "cell_type": "code",
   "execution_count": 14,
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    {
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       "2"
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     "execution_count": 14,
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   "source": [
    "find(\"owe\")"
   ]
  },
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   "execution_count": 15,
   "id": "89d89bbe-0660-4fa9-aedf-dbd10408ff3d",
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    {
     "data": {
      "text/plain": [
       "'The book does not contain the word \"ho\"'"
      ]
     },
     "execution_count": 15,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "find(\"ho\")"
   ]
  }
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