Modern Python Cookbook - Second Edition by Steven F. Lott

Author:Steven F. Lott
Language: eng
Format: epub
Publisher: Packt
Published: 2020-07-29T11:48:56+00:00

How to do it...

Let's start by importing the function we need:

Import the reduce() function from the functools module: from functools import reduce

Pick the operator. For sum, it's . For product, it's . These can be defined in a variety of ways. Here's the long version. Other ways to define the necessary binary operators will be shown later: def mul(a, b): return a * b

Pick the base value required. For sum, it's zero. For product, it's one. This allows us to define a prod() function that computes a generic product: def prod(values): return reduce(mul, values, 1)

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