Programmer Group

  1, Download Interface   1. Main interface download display MainWindow first initializes aria and starts aria2. The startup method is in download.py.  # start aria2         start_aria = StartAria2Thread()         self.threadPool.append(start_aria)         self.threadPool[0].start()         sel ...

Data set comes from kaggle classic competition data set I. purpose According to the information in the data set, we use python machine learning to predict the survival of Titanic passengers. 2, Dataset My dataset has three formats: test, train and genderclassmodel, all in csv format Fields in test and ...

Like, pay attention to, and form good habits For details of the series of courses, please refer to superstar learning link: https://me.chaoxing.com (click to link) Welcome to guide 1. Preface Recently, superstar learning general course needs several cover pictures (the template picture is not sat ...

Target website: https://www.mn52.com/ The code of this article has been uploaded to git and Baidu. The link is shared at the end of the article Website overview     Target, grab all the pictures using the graph framework and save them locally. 1. Create a sketch project scrapy startproject images 2. Create a spider cd images scrapy genspide ...

Catalog 1. PIL-Python image library 1.1 image gray processing code implementation Operation result 1.2 adjustment of dimensions and rotation code implementation Operation result 2. Matplotlib Library 2.1 drawing, tracing points and lines code implementation Operation result 2.2 image outline ...

Each section in the python3-cookbook explores the best solution of Python 3 to a given problem in three parts: problem, solution, and discussion, or how Python 3's own data structure, functions, classes, and so on, can be better used in a given problem.This book is very helpful for understanding Python 3 and improving Python programming capabil ...

[Python data visualization] Matplotlib learning notes (1) Introduction: Matplotlib is a Python 2D drawing library, which generates publishing quality graphics in various hard copy formats and cross platform interactive environments. With Matplotlib, developers can generate graphs, histograms, power ...

Catalog 1, Use URL class 2, Use HttpURLConnection to send GET request 3, Use HttpURLConnection to send POST request 4, Download case Compared with python, Java crawler is a bit more complex. A few lines of python code can grab a web page. Java may need dozens of lines or even more, so python has m ...

Using Python requests library to crawl educational administration system When I was a sophomore, I felt that the school's educational administration system was particularly backward. It was very troublesome to use the functions of score query and schedule check. At that time, the official account of t ...

Demand background The business system stores all kinds of reports and statistical data in ES. Due to historical reasons, the system makes statistics in full amount every day. As time goes on, the data storage space of ES is under great pressure. At the same time, because the use of ES index is not well planned, some indexes even exceed the max ...