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This article thanks the following documents or instructions for their reference.Selenium Python Chinese documentSelenium DocumentationWebdriver reference If there is any error, please point out in the comment area. The author will change it immediately. The article is moved from my personal CSDN, so there is no watermark Environmental d ...

In the work, we often use excel to deal with data and display, but for some work we can use the help of programs to achieve efficient problem-solving effect. For example, the json returned from the interface is parsed and saved in Excel, the data in excel is processed according to certain rules and then written into a new EXCEL file, and the co ...

by programmer When we first came into contact with programming, we learned that there are two major ideas in the field of programming: process oriented and object-oriented. Python is an object-oriented language. If you have known the idea of object-oriented, naturally you know that the idea of object-oriented contains two basic concepts: ...

1, First, let's see how Python can simply crawl the web page1. Preparation The beautiful soup4 and chardet modules used in the project belong to the three-party extension package. If not, please install pip by yourself. I use pycharm to do the installation. Next, I will simply use pycharm to install chardet and beautiful soup4 Follow the steps ...

Previously, we used the keypoint of detectron 2_ RCNN trains its own data set to complete the detection of object feature points. This article is to turn the pytorch model into the form of c + + call. Effect: Detectron 2 provides routines for converting the pytorch model to c + + calls: Deployment , gpu version model conversion requires Python ...

Source network, only for learning, if there is infringement, please contact delete. If we can achieve report automation, we will save a lot of time and complete the work more efficiently. So, how to use python to realize report automation? This article will introduce the common functions of xlwt, xlrd and xlutils, the application of formulas ...

Scratch is an application framework for crawling website data and extracting structural data. More details about the use of the framework can be found in the official documents. This article shows the general implementation process of crawling cartoon pictures. Scrapy environment configuration The first is the installation of scratch. The blogg ...

Let 's start with a brief introduction to the unittest framework 1. Structured folder: Note that the above folders are all packages, that is, when you create a new folder in new, you should not select directory, but select package; The first step is finished after the folder is built! 2. The second step is the idea of object-oriente ...

Based on Python's file, directory and path operations, we usually use os.path modular. pathlib is its replacement in os.path On the basis of the encapsulation, the path is objectified, the api is more popular, the operation is more convenient, more in line with the thinking habits of programming. The pathlib module provides classes that use sem ...

In Linux, to judge whether a PID corresponding process exists, you can judge it as follows #! /usr/bin/env python import os def check_pid(pid): try: os.kill(pid,0) except OSError: return False else: return True if __name__ == "__main__": print check_pid(22467) Returns True if the PID exists in the sy ...