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use defaultdict in buildWordDict #84

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20 changes: 12 additions & 8 deletions Chapter09_NaturalLanguages.ipynb
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Original file line numberDiff line numberDiff line change
Expand Up@@ -18,7 +18,7 @@
"from bs4 import BeautifulSoup\n",
"import re\n",
"import string\n",
"from collections import Counter\n",
"from collections import Counter, defaultdict\n",
"\n",
"def cleanSentence(sentence):\n",
" sentence = sentence.split(' ')\n",
Expand DownExpand Up@@ -187,13 +187,8 @@
" # Filter out empty words\n",
" words = [word for word in words if word != '']\n",
"\n",
" wordDict = {}\n",
" wordDict = defaultdict(lambda: defaultdict(int))\n",
" for i in range(1, len(words)):\n",
" if words[i-1] not in wordDict:\n",
" # Create a new dictionary for this word\n",
" wordDict[words[i-1]] ={}\n",
" if words[i] not in wordDict[words[i-1]]:\n",
" wordDict[words[i-1]][words[i]] = 0\n",
" wordDict[words[i-1]][words[i]] += 1\n",
" return wordDict\n",
"\n",
Expand DownExpand Up@@ -305,8 +300,17 @@
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.6.1"
},
"pycharm":{
"stem_cell":{
"cell_type": "raw",
"source": [],
"metadata":{
"collapsed": false
}
}
}
},
"nbformat": 4,
"nbformat_minor": 2
}
}