October 2019
Beginner to intermediate
674 pages
16h 43m
English
Content preview from Mastering pandas - Second Edition
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Subsetting while reading
Only a selected list of columns can be subsetted and loaded using the usecols parameter while reading:
data=pd.read_csv('Tab Customer Churn Model.txt',sep='/t',usecols=[1,3,5])data=pd.read_csv('Tab Customer Churn Model.txt',sep='/t',usecols=['VMail Plan','Area Code'])
Numeric lists, as well as explicit lists with column names, can be used. Numeric indexing follows Python indexing, that is, starting from 0.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.