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Functional Python Programming - Second Edition
book

Functional Python Programming - Second Edition

by Steven F. Lott
April 2018
Intermediate to advanced content levelIntermediate to advanced
408 pages
10h 42m
English
Packt Publishing
Content preview from Functional Python Programming - Second Edition

Applying generator expressions to scalar functions

We'll look at a more complex kind of generator expression to map data values from one kind of data to another. In this case, we'll apply a fairly complex function to individual data values created by a generator.

We'll call these non-generator functions scalar, as they work with simple atomic values. To work with collections of data, a scalar function will be embedded in a generator expression.

To continue the example started earlier, we'll provide a haversine function and then use a generator expression to apply a scalar haversine() function to a sequence of pairs from our KML file.

The haversine() function looks like the following code:

from math import radians, sin, cos, sqrt, asin from ...
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Functional Python Programming - Third Edition

Functional Python Programming - Third Edition

Steven F. Lott

Publisher Resources

ISBN: 9781788627061Supplemental Content