Shulou(Shulou.com)06/01 Report--

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.

About "python how to use the list understanding method" this article is shared here, I hope the above content can be of some help to everyone, so that you can learn more knowledge, if you think the article is good, please share it for more people to see.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.