python crawls the data of the network and visualizes it

Crawling the data information about python position in the pull net, and storing the crawling data into various csv files, then cleaning the data of the relevant fields in the csv file, and making further analysis on the data visualization, including histogram display, histogram display, word cloud display, etc. according to the visualization d ...

Added by Vizor on Sun, 24 May 2020 07:37:16 +0300

How to make a picture of 28000 pictures with python (concise and clear with source code)

    preface A picture is made up of numerous pixels, so we will fill these pixels with pictures Knowledge points: 1. cv2 2. numpy 3. tqdm 4. argparse Development environment: Python 3.6 Pycharm Ideas: 1. Input 2. Calculation and processing 3. Output 4. Display Add Penguin Group 695185429 and you can get it for free. All the information is in ...

Added by stewartship on Fri, 22 May 2020 18:17:27 +0300

Exception handling of Flask development skills

catalog Exception handling of Flask development skills 1. Flash built in exception handling 2. HTTPException class analysis 3. Custom exception handling class 4. Easily define your own error class 5. Precautions I usually use in the development, or learn some of the flask development skills, need to have a more solid basis for flask. 1. F ...

Added by SpectralDesign.Net on Fri, 22 May 2020 12:02:14 +0300

Python easy map visualization (with detailed source code)

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. Python has a lot of map visualization libraries. Although Matplotlib library is very power ...

Added by dannyluked on Thu, 21 May 2020 09:54:45 +0300

Fully parsing different python threads

thread The scheduling unit of CPU is simply the end executor in the program, which is equivalent to the position of younger brother. Some people say that the thread in python is a chicken rib because of GIL, but it is not a chicken rib. After all, it works well when performing io operations, but it is unsatisfactory when performing calculation ...

Added by greenhorn666 on Wed, 20 May 2020 10:16:40 +0300

Self timer 66 Python ffmpeg bulk compression video

Case story: Bug videos are found during the test, which need to be provided for reference in the development of Bug solution, However, after video shooting, it is too large to be transmitted on wechat client, Therefore, there have been testers using winzip to compress in batches (part1, part2, part3), Then transmit the "chaos" of vid ...

Added by ciaranmg on Tue, 19 May 2020 20:11:39 +0300

Python efficiency revolution processing Excel tables

Excel is a powerful spreadsheet application running in Windows environment. An Excel spreadsheet is called a workbook, and a workbook is saved in a file with the extension. xlsx. Each workbook can contain multiple tables (worksheets) the table currently viewed by the user (or the last table viewed before closing) is called the active table. ...

Added by saadatshah on Tue, 19 May 2020 10:10:42 +0300

Three solutions of verification code recognition in Python crawler

In the process of Python crawler, some websites need to pass the verification code before entering the web page. The purpose is very simple, that is to distinguish between human reading and machine crawler. The problem of verification code seems simple. It is not easy to achieve high accuracy. In order to learn more about reptiles, the followin ...

Added by j05hr on Mon, 18 May 2020 11:41:05 +0300

python monitor, operate keyboard and mouse library pynput detailed tutorial

Section 0.0.0 preface Monitor, operate mouse and keyboard are shortcut to realize automation, such as me Automatic check in Analog keyboard operation is used. pynput is a cross platform third-party python library that monitors and controls mouse and keyboard. You can install it through pip insnall pynput. The dependent libraries are downloaded ...

Added by pvraja on Sun, 17 May 2020 09:07:55 +0300

python notes: drawing Nightingale rose with pyecharts

Recently, "Nightingale rose map" has caught fire all over the Internet due to the people's Daily's report of the epidemic. Used to see pie chart, at first contact with this chart, it is inevitable to be amazed by its visual impact. Since I have been studying Python for the past two years, I am now ready to use Python to make Nightinga ...

Added by Yrogerg on Wed, 13 May 2020 21:42:52 +0300