python data type conversion and operators

This section needs to know Reserved Words and IdentifiersUnderstanding Data Types in Pythonbasic data typeConversion between data typeseval() functiondifferent base numbersoperatoroperator precedencesmall classroom tasks 1. Reserved words true='real' True='real' File "<ipython-input-2-0244e2f5e602>", line 2 True='real' ^ ...

Posted by wardo on Wed, 23 Nov 2022 03:48:14 +0300

Python obtains free proxy IP, but few can use it?

Hi everyone, hello! I am a little panda ❤ About why IP proxy is needed: When collecting data, collecting data in batches, the request speed is too fast, The website may block your IP <Your network cannot access this site> The IP proxy changes to another IP, and then collects the request data Source code and information click ...

Posted by cavolks on Fri, 18 Nov 2022 21:22:57 +0300

python function 2_ variable scope, function parameters (positional parameters, keyword parameters, default parameters, variable length positional parameters, variable length keyword parameters), unpacking, reference

I wrote a function before, there should be a total of 3 articles about the function, and I will post it here when I write it 0. Content variable scopeMulti-Function Program Execution Flowfunction return valuefunction parametersUnpack and swap the values ​​of two variablesquotemutable and immutable types 1. Variable scope The variable sc ...

Posted by m4x3vo on Mon, 14 Nov 2022 22:48:37 +0300

[The ninth week of embedded system basics]--embedded real-time operating system uc/OS

1.CubeMX build project 1.1 Configure RCC (open external clock), SYS (select debug interface) 1.2 Configure GPIO (PC13 is used to light up LED lights) 1.3 Configure USART1 (serial port output) 1.4 Save, generate project file Since the above steps are relatively simple and not shown, if you forget, you can refer to my other articles: ht ...

Posted by dunnsearch on Sun, 13 Nov 2022 12:09:00 +0300

Dictionary name [key name] = new value Modify the value of the dictionary

37. Dictionary name [key name] = new value Modify the value of the dictionary 1. Mutability of dictionaries Strings and tuples are immutable data types. Lists and dictionaries are mutable. Variable means that it can be changed, that is, elements can be added to lists and dictionaries, and existing elements can be deleted and modified. ...

Posted by buzzby on Mon, 24 Oct 2022 07:07:08 +0300

Java uses tool classes to improve the efficiency of writing reports

The tool class and demo code repository in this article Why use java code to write reports For report data, in most cases, the method of writing sql is used to provide data sources for large screens/reports, but in some complex cases, it cannot be achieved by using only sql, or when it is difficult to achieve, it will be adopted to implement ...

Posted by patrickcurl on Sun, 23 Oct 2022 01:29:01 +0300

A Java-based Accounting Management System Completed by Computer

Code + paper download link: http://106.55.47.97/host-pictures/java.png Overview The Java accounting management system is mainly used for financial personnel to judge the development direction of the company from the accounts. For individuals and families, future consumption plans can be formulated through bookkeeping, so as to draw a clear ...

Posted by dotnotwhat on Sat, 22 Oct 2022 22:56:11 +0300

[C++ Search Binary Tree] 1. The concept of binary search tree 2. Non-recursive implementation of binary search tree

Table of contents 1. Binary search tree concept 2. Non-recursive implementation of binary search tree 2.3 Search for deletion of binary tree (the most important and most difficult interface) 3.(key) recursive implementation of binary search tree 4.(KV) recursive implementation of binary search tree 1. Binary search tree concept A sear ...

Posted by rutin on Wed, 19 Oct 2022 15:57:05 +0300

Teen python Series 10. Strings

Teenager python Series Directory - Old Programmer's Blog - CSDN Blog Teenager python teaching video ppt source code Introduction In Python, the text enclosed in quotation marks is a string, and the string can also be saved in a variable for use. If the text in the string contains double quotes, you can enclose the string in single quote ...

Posted by squallm1 on Sun, 09 Oct 2022 22:43:30 +0300

Eight Python automation scripts to improve work efficiency and make fishing happier

Hello ~ Hello everyone, I'm Madoka When we work ~ often do some repetitive things For example: reading news, sending emails, checking the weather, cleaning folders, etc. Is there any way to shorten or even cancel the time to do these things? Of course there is! ! That is to use an automated script to pull~ This saves us having to do t ...

Posted by mannyee on Sat, 08 Oct 2022 00:33:39 +0300