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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

Using len() and sum()

The len() and sum() functions provide two simple reductions—a count of the elements and the sum of the elements in a sequence. These two functions are mathematically similar, but their Python implementation is quite different.

Mathematically, we can observe this cool parallelism. The len() function returns the sum of ones for each value in a collection, .

The sum() function returns the sum of x for each value in a collection, .

The sum() function works for any iterable. The len() function doesn't apply to iterables; it only ...

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Functional Python Programming - Third Edition

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Publisher Resources

ISBN: 9781788627061Supplemental Content