Programmer Group

1.1 system performance information module psutil psutil is a cross platform library, which can easily obtain the process and system utilization information of the system. It is mainly used for system monitoring, analyzing and limiting system resources and process management. It realizes the functions provided by the same command-line tools. & ...

Determine whether an integer is palindrome Title Description: Source: LeetCode 09 palindromes Give you an integer x, if x is a palindrome integer, return true; Otherwise, return false. Palindrome numbers refer to integers whose positive order (left-to-right) and reverse order (right-to-left) are read the same. For example, 121 is palindrome a ...

In the last article, we talked about flashbacks, and then we talked about tuples, about lists and characters. Variables can be viewed by clicking my home page. Remember to click follow. if statement if keyword or condition judgment: Condition (i.e. expression): Conditions can also be output statements name = 'Qing'an' if name == 'Qing'an': ...

Task 2 Python basics review: data structure summary List list 1. Create a list by derivation x = [i for i in range(100) if (i % 2) != 0 and (i % 3) == 0] #[3, 9, 15, 21, 27, 33, 39, 45, 51 #, 57, 63, 69, 75, 81, 87, 93, 99] <class 'list'> 2. Since the element of the list can be any object, what is saved in the list is the pointer of ...

Seventh Week Meeting Minutes Preface1. Photos of division of work among members and regular meetings2. Everyone's code and documentation 1. User login, rights management2. Publish, comment, search summary Preface This week we held our second discussion, in which we focused on the overall task and individual division of ...

Simulate a story, randomly find a few beautiful pictures from Baidu pictures, download them, save them locally, and download them in order first 1 sequential synchronous Download import random import time import requests urls = [ "https://t7.baidu.com/it/u=3676218341,3686214618&fm=193&f=GIF", "https://t7.baidu.com/it/u=3 ...

python template rendering jinja2 - python web (3) ​      Jinja2 is a fast, expressive and extensible template engine. It was written by werkzueg author Armin ronacher (people used to call him mitsuhiko )Development, used for data rendering of python web html pages, flush with jsp of java servlet. Jinja2 makes it possible ...

Thank you very much for reading this article~ Welcome[ 👍 [like][ ⭐ Collection][ 📝 [comments]~ It's not hard to give up, but it must be cool to insist~ I hope all of us can make a little progress every day~ This paper consists of White hat of the second leader: https://le-yi.blog.csdn.net/ Blog originality~ Sword finger Offer II 05 ...

2021SC@SDUSC 3.3 ExecutionEngine look down   open_spider # scrapy/core/engine.py class ExecutionEngine(object): # ... @defer.inlineCallbacks def open_spider(self, spider, start_requests=(), close_if_idle=True): assert self.has_capacity(), "No free spider slot when opening %r" % \ spider.name log ...

This series of articles is to explain Python OpenCV image processing knowledge. In the early stage, it mainly explains the introduction of image and the basic usage of OpenCV. In the middle stage, it explains various algorithms of image processing, including image sharpening operator, image enhancement technology, image segmentation, etc. in th ...