Programmer Group

Basic use of Requests install pip install requests I. Requests module request Get web page (without parameters) r = requests.get('http://www.chinahufei.com') r = requests.post('http://www.chinahufei.com') r = requests.delete('http://www.chinahufei.com') r = requests.head('http://www.chinahufei.com') r = requests.options('http://www.chinahuf ...

Background needs At the same time of finishing the task, practice the crawler, and use the Xpath to match the content to be crawled; News interface to be crawled Information to be crawled Implementation code #!/usr/bin/env python # -*- coding: utf-8 -*- # @Time : 2019/3/13 13:08 # @Author : cunyu # @Site : cunyu1943.github.io # @File ...

Preface The text and pictures of this article are from the Internet, only for learning and communication, not for any commercial purpose. The copyright belongs to the original author. If you have any questions, please contact us in time for handling. Author: Xiaozhan & Arbor PS: if you need Python learning materials, you can click the link ...

I. foreword Decentralized configuration idea: create a properties file, add data, configure the properties file in the beans file first, and then use placeholders to reference data in beans For many processing interfaces in the bean's life cycle, the processing method is spring's own bean, that is, spring's special bean 2. When the property f ...

The factory method pattern optimizes the simple factory pattern by introducing abstract factory class to make the system more open and close. Let's use an example to simulate the factory method pattern Create an abstract factory first package FactoryMethodPattern; public interface LoggerFactory { public Logger createLo ...

First, configure the login xml file, and set two EditText, a Button and a CheckBox; The configuration code is as follows: <?xml version="1.0" encoding="utf-8"?> <EditText android:id="@+id/et_userName" android:layout_width="300dp" android:layout_height="wrap_content" /> </Li ...

During the development of uploading and downloading files on FTP, you can log in to the FTP server, but the upload and download always report an error. After that, the FTPClient.enterLocalPassiveMode() method is added before the operation. Success.Note: call ftp client. Enterlocalpassivemode(); this method means that before each data connectio ...

Senior Python programmers teach you simple and interesting programs:Using the third-party database, we can count the number of characters' names in the romance of the Three Kingdoms. Senior Python programmers teach you how to count the frequency of names in the three countries. It's very simpleOne of them is a third-party library which classif ...

Preface If you often read the Python crawler related public numbers, they will be displayed in the form of crawler + data analysis. This is very interesting and the charts are very good. Today, I will share with you one of the last works in training: cat eye movie crawler and analysis. Through the crawler of the top 100 list ...

I. demand Regularly generate dmp from A database in oracle database of server A and back it up to server B (save for 10 days) II. Configure scheduled database backup Create A backup directory on server A and give permissions [root@localhost /]# mkdir -p /home/oraclebak #Create a new oracle backup directory [root@localho ...