Python for Everybody: Exploring Data in Python 3 by Charles Severance

Author:Charles Severance [Severance, Charles]
Language: eng
Format: epub
Published: 2016-07-10T05:00:00+00:00

The first loop builds a list of tuples, where each tuple is a word preceded by its length.

sort compares the first element, length, first, and only considers the second element to break ties. The keyword argument reverse=True tells sort to go in decreasing order.

The second loop traverses the list of tuples and builds a list of words in descending order of length. The four-character words are sorted in reverse alphabetical order, so "what" appears before "soft" in the following list.

The output of the program is as follows:

['yonder', 'window', 'breaks', 'light', 'what', 'soft', 'but', 'in']

Of course the line loses much of its poetic impact when turned into a Python list and sorted in descending word length order.

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