Python Closure Implementation Counter method

Source: Internet
Author: User
Tags closure

This article mainly introduced the Python closure implementation counter method, analyzed the closure concept and realizes the counter the related skill, needs the friend to be possible to refer to under

This example describes the Python closure implementation counter method. Share to everyone for your reference. The implementation methods are as follows:

First look at the professional explanation: Closure (Closure) is a lexical closure (lexical Closure) abbreviation, is a reference to the function of the free variable. The referenced free variable will exist with this function, even if it has left the environment that created it. So, there is another saying that closures are entities that are combined by functions and reference environments associated with them.

The code is as follows:


1 2 3 4 5 6 7 8 9 10 11-12 #!/usr/bin/env python #coding =utf-8 def generate_counter (): CNT = [0] def add_one (): cnt[0] = cnt[0] + 1 return cnt[0] ret Urn Add_one counter = generate_counter () print counter () # 1 Print counter () # 2 Print counter () # 3

I hope this article will help you with your Python programming.

Related Article

E-Commerce Solutions

Leverage the same tools powering the Alibaba Ecosystem

Learn more >

Apsara Conference 2019

The Rise of Data Intelligence, September 25th - 27th, Hangzhou, China

Learn more >

Alibaba Cloud Free Trial

Learn and experience the power of Alibaba Cloud with a free trial worth $300-1200 USD

Learn more >

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: and provide relevant evidence. A staff member will contact you within 5 working days.