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Python crawler, data analysis, website development and other case tutorial videos can be viewed online for free https://space.bilibili.com/523606542 Python learning exchange group: 1039649593 Use of threading module python's thread module is the underlying module, and python's threading module wraps thread, which can be used more conve ...

I wrote a manual about installing ROS 2E under Ubuntu 20.04 before. I'm going to use Moveit2 recently. I found that I still need to upgrade to Fox Fitzroy. I've seen that the latest one has arrived at Galactic Geochelone, so I'll record the process of installing ROS 2 Galactic Geochelone under Ubuntu 20.04. Because there are many holes in th ...

cuckoo installation and configuration 1, Main functions of cuckoo Cuckoo is a security mechanism to isolate and execute unknown and untrusted software. Malware analysis sandbox is generally used to automatically and dynamically execute untrusted software in an isolated environment, and then extract the process behavior, network behavior, ...

Raspberry pie face recognition access control requirements Face recognition access control application has been very popular. This paper will describe in detail how to realize face recognition access control application with raspberry pie. There are two functions to be realized: 1. Detect the face, draw the recognition frame and track it i ...

Have you distinguished Iterable, iterator and generator? What are they, what is the relationship between them, what are their uses and how to create them? This article explains in detail one by one Iteratable Any object that can be iterated is iterable. In short, the objects that can be used in for loop are, for example: All sequence types a ...

ConfigParser ConfigParser is a class used to read configuration files First of all, we should understand two concepts: section: as shown in the figure below, [] brackets contain nodes (non repeatable)option: as shown in the figure below, the form of key = value pairs is options (can also be separated by:)Understanding: imagine the entire con ...

Design idea: Use the dictionary to store each person's corresponding poem and poem name, and use the pilot library to build pictures. Implementation scheme First use The csv file stores the person's name according to Build an empty dictionary from the items in the csv file. Read into the whole Tang poetry txt file, find out the poem of each ...

Recently, I used Python and wrote several crawlers to practice. There are many online tutorials, but some can't climb. The main reason is that the website is often changed, but crawlers still have a common idea, that is, downloading data, parsing data and saving data. Let's talk about it. 1. Download data First, open the website to be craw ...

Baidu cloud link of the file used in this article: Link: https://pan.baidu.com/s/15-qbrbtRs4frup24Y1i5og Extraction code: pm2c linear prediction Assuming that a set of data conforms to a linear law, we can predict the data that will appear in the future a b c d e f g h .... ax + by + cz = d bx + cy + dz = e cx + dy + ez = f In ...

Official account: Special HouseAuthor: PeterEditor: Peter Hello, I'm Peter~ This will be the last article on DataFrame data filtering, focusing on the use of three pairs of functions: iloc and loc, the most important and frequently used pair of functionsat and iatany and all Important learning materials: https://pandas.pydata.org/pand ...