How to use list comprehension in python

This article will explain in detail how Python uses the list understanding method, Xiaobian feels quite practical, so share it with you for a reference, I hope you can gain something after reading this article.

Use list comprehension

A common step in cleaning and manipulating data is to modify an existing list. For example, we have the following lists that need to be capitalized:

words = ['california', 'florida', 'texas']

A typical way to capitalize each element of a words list is to create a new uppercase list, execute a for loop, use.title(), and append each modified value to the new list.

capitalized = []for word in words: capitalized.append(word.title())

Pythonic's approach, however, is to use list understanding to do just that. List Understanding There is an elegant way to make lists.

You can rewrite the above for loop with one line of code:

capitalized = [word.title() for word in words]

Thus we can skip some of the steps in the first example and the result is the same.

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