In a single chain, add a price column (revenue / cups) to orders and return the…
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chaining.assign().pipe().query().loc[lambda]inplace is a trapPutting the kettle on…
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Exercise 1
In a single chain, add a price column (revenue / cups) to orders and return the frame — without assigning to a temporary.
your answer
stuck? the lesson behind it
Method chaining
One expression, no half-modified frames, and the same answer every time you run it.