October 2017
Intermediate to advanced
532 pages
16h 10m
English
Content preview from Pandas Cookbook
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How it works...
After importing the data and identifying the three entities, we must create a unique identifier for each observation so that we can link to the movies, actors and directors together once they have been separated into different tables. In step 2, we simply set the ID column as the row number beginning from zero. In step 3, we use the wide_to_long function to simultaneously melt the actor and director columns. It uses the integer suffix of the columns to align the data vertically and places this integer suffix in the index. The parameter j is used to control its name. The values in the columns not in the stubnames list repeat to align with the columns that were melted.
In step 4, we create our three new tables, keeping the ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.