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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

Flattening sequences

Sometimes, we'll have zipped data that needs to be flattened. For example, our input could be a file that has columnar data. It looks like this:

2     3      5      7     11     13     17     19     23     29
31    37     41     43    47     53     59     61     67     71
...

We can easily use (line.split() for line in file) to create a sequence. Each item within that sequence will be a 10-item tuple from the values on a single line.

This creates data in blocks of 10 values. It looks as follows:

>>> blocked = list(line.split() for line in file)>>> blocked[['2', '3', '5', '7', '11', '13', '17', '19', '23', '29'], ['31', '37', '41', '43', '47', '53', '59', '61', '67', '71'], ['179', '181', '191', '193', '197', '199', '211', '223', '227', '229']]

This is a start, but it isn't complete. We want ...

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Functional Python Programming - Third Edition

Functional Python Programming - Third Edition

Steven F. Lott

Publisher Resources

ISBN: 9781788627061Supplemental Content