简体中文(ZH-CN) English(EN) 繁体中文(ZH-TW) 日本語(JA) 한국어(KO) Melayu(MS) Français(FR) Deutsch(DE)
Home > Backend Development > Python Tutorial > body text

Python数组条件过滤filter函数使用示例

WBOY
Release： 2016-06-16 08:43:06
Original
1964 people have browsed it

使用filter函数，实现一个条件判断函数即可。

比如想过滤掉字符串数组中某个敏感词，示范代码如下：

#filter out some unwanted tags 
def passed(item): 
try: 
return item != "techbrood" #can be more a complicated condition here 
except ValueError: 
return False 

org_words = [["this","is"],["demo","from"],["techbrood"]] 
words = [filter(passed, item) for item in org_words]
Copy after login

注意Python2.x和Python3.x对于filter/map的处理并不兼容，在Python2.x里面直接返回一个list.

在Python3.x里返回一个iterable对象，比如，后面那串数字是对象引用地址。

可以使用list(words)转换。

Related labels：
filter function array
source：php.cn
Previous article：python中的内置函数getattr()介绍及示例 Next article：Python实现的生成自我描述脚本分享(很有意思的程序)
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Latest Issues
function_exists() cannot determine the custom function Function test () {return true;} if (function_exists ('test')) {echo "test is function...
From 2024-04-29 11:01:01
0
2
1429
PHP arrays obtained from URL parameters do not behave as expected I have a URL parameter that contains the category ID and I want to treat it as an array li...
From 2024-04-06 22:09:02
0
1
1428
What is the format of the variables in the return value? I am a new learner of php. I found a piece of code: if($x<time()){return[false,'error']...
From 2024-04-06 21:55:20
0
1
778
How to trigger render (with filter and pagination) on sort method in React? Here is my Sort.js style component: <SortWrapper><SortText>SortBy</SortText...
From 2024-04-06 21:28:37
0
1
2257
Set a private member of a class as a constructor parameter classFoo{#one#two#three#four#five#six#seven#eight#nine#ten#eleven#twelve#thirteen#fourteen...
From 2024-04-06 21:48:47
0
1
637
Related Topics
More>
Popular Recommendations
Popular Tutorials
More>
Related Tutorials
Popular Recommendations
Latest courses
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template
About us Disclaimer Sitemap
php.cn：Public welfare online PHP training，Help PHP learners grow quickly！