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Scenarios and phenomena to be optimized The project gives the flash gevent framework, which will periodically (5 seconds) write a json file to the file system The file size is 40M The phenomenon is that gevent will not switch the code of other processes until the file is written principle When reading and writing files, linux will block ...

What is a string Everything wrapped in quotation marks is a string. In python, Chinese and English sentences need to be wrapped in quotation marks, otherwise an error will be reported For example: 'A string wrapped in single quotes' "A string wrapped in double quotes" '''A string wrapped in three single quotes''' """A string wrapped i ...

See a good anne's summer article to share Scope declaration of function variables (global and local variables) Introduce questions: Local variables: Local variable: a variable defined inside a function. Its scope is limited to the inside of the function. It cannot be used outside the function. For example: #encoding = utf-8 def demo(): ...

Backpack Cryptograph is missing Mathematics Lattices 1. Vectors Basic vector-to-scalar operations Title: v = (2,6,3), w = (1,0,0) and u = (7,7,2), calculate 3*(2*v - w) ∙ 2*u. Calculate directly using sage sage: v = vector([2,6,3]) sage: w = vector([1,0,0]) sage: u = vector([7,7,2]) sage: 3*(2*v-w)*2*u 702 flag is 702 2. Size ...

✨✨✨ Thank you for opening Xiaobai's article "I hope you have made a little progress today and come closer to a better life!" 🌈   catalogue 🚀 Previous review 🍉 preface 🍉 Basic function application 🍉 Application example I 🍉 Application example II 🚀 Previous review Basic image processing (I)(1 message) basic ima ...

preface Purpose of this Code: as a door lock, raspberry pie has an id that uniquely identifies the door lock. In order to enable raspberry pie and app to communicate effectively with each other, tcp sockets are used. In order to easily identify the content of communication, the codes of the three are utf-8 java Server theory Write the s ...

Create your own Python IDE development tool with Tkinter (2) to realize Python code execution and output information In the previous article, we introduced the implementation of the editor. This article describes how to implement Python code execution and output information. To execute Python code, we use the function exec(). Its usage is as fo ...

Python builds TCP communication TCP/IP protocol TCP/IP (Transmission Control Protocol/Internet Protocol) refers to a protocol cluster that can realize information transmission between multiple different networks. TCP/IP protocol refers not only to TCP and IP Two agreements, but one by FTP,SMTP,TCP,UDP The protocol cluster composed of, IP and ...

This blog post will be released in Nuggets community first! preface Through the previous introductions, we probably know some basic concepts of tensor of our pytorch, as well as some details of our gradient and tensor replication. Tensor is very similar to numpy to a great extent. In some cases, we can even use tensor directly for calcul ...

brief introduction Whether doing scientific calculation or writing applications, we need to use some basic data structures, such as lists, tuples, dictionaries and so on. This article will explain these basic data structures in Python in detail. list A list is a list, which can be expressed in square brackets: In [40]: ages = [ 10, 14, 18, ...