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#Notes or ideas from "Python for Data Analysis"

  • pg 26: I'm trying to use Regex to only pull review data that matches certain patterns. I'm doing this the wrong way, but I should figure out how to do it. re.match didn't work either In [60]:import re In [78]:mean_ratings.index[1] Out[78]:'10 Things I Hate About You (1999)' In [82]:re.search('10', mean_ratings.index[1]) == True Out[82]:False In [85]: for i in mean_ratings.index: if re.match('10', mean_ratings.index[i]): print mean_ratings.index[i]

    IndexError: only integers, slices (:), ellipsis (...), numpy.newaxis (None) and integer or boolean arrays are valid indices

    • THIS works 
       for i in mean_ratings.index:
     if re.match('10', i):
         print i

  • reversing a DataFrame? Then taking the first 15. I've never seen this 'reversing' syntax before: sorted_by_diff[::-1][:15]

  • s