Python Basics
Python Basics

R read and write xlsx files

... Grace
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Python Basics

Simple use of Slurm cluster resource manager

... Aaron
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Python Basics

Text wrapping in ggplot2

... Hailey
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Python Basics

Monte Carlo stochastic method/simulation (Monte Carlo method)

Monte Carlo stochastic method, namely statistical simulation method, is a kind of numerical calculation method guided by probability and statistics theory. Essentially, the whole is estimated by parts. The more samples, the closer to the optimal solution.The most common and classic example is to find the value of pi. As shown below:exampleThere is an inscribed circle in the square. If the radius of the circle is r, the area ratio of the circle to the square is pi/4. If we sprinkle stones into th

... Greyson
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Advanced Python
trending_up Advanced Python

Js reverse essential skills-dynamic hook to find the entrance

... Kaiden
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trending_up Advanced Python

Install mitmproxy and the pits encountered and simple usage

... Faith
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trending_up Advanced Python

In order to get a glimpse of people’s comments after the National Football team lost to South Korea, I crawled on the Dengqiu Di app

... Nathan
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trending_up Advanced Python

The crawler broke?

... Adriana
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trending_up Advanced Python

Generate mosaic paintings with Python

... Quinn
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trending_up Advanced Python

Use Python to be a WeChat automatic reply robot

... Ayden
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Python Web Development
Python Web Development

Nginx+uwsgi deploy Django application

The purpose of this article: Deploy Django applications using nginx and uwsgi on the centos7.x server0. Install python3The server used in this article is centos7.0 64-bit of Tencent Cloud. Other Linux systems are similar. Some installation commands are self-checking.First install the python3 environment, as well as various components. At the beginning, there were various problems. Then I used @小小Ho's to let Python3.6 fly on Centos7.x for a while~ The one-click script here, smoothly Finished.wget

... Sydney
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Python Web Development

Analyze Apple's stock price data with Python

Author : soy sauce brother, Tsinghua program ape, IT mainstreamColumn address: https://zhuanlan.zhihu.com/c_147297848❈First look1. csv data reading2. Use commonly used functions to obtain statistics such as mean, median, variance, standard deviation, etc.3. Use common functions to analyze common indicators such as the weighted average of prices, rate of return, annualized volatility, etc. 4. Process the date in the dataWe will finally introduce some very useful and commonly used functions in the

... Bennett
schedule 11 min read
Python Web Development

Remember a shocking experience of troubleshooting website TCP queue problems

Author: Liu Xiaoming, operation and maintenance of Internet company technical director, has 10 years of experience in Internet development and operation and maintenance. Has been committed to the development of operation and maintenance tools and the promotion of operation and maintenance expert services to empower development and improve efficiency.Problem Description:1. The monitoring system found that the homepage and other pages of the e-commerce website are intermittently inaccessible; 2. C

... Adriana
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Machine Learning
Machine Learning

Python crawls the Shanghai Stock Exchange's one-year market data

This time we use requests and json to crawl the data of the Shanghai Stock Exchange’s A-share market, and use the closing price as a coordinate to draw the trend for 2018-2019. The interface to be crawled is as follows:The specific crawler code is as follows:import json import requests import matplotlib.pyplot as plt #Crawler def load_sse(): url='http://yunhq.sse.com.cn:32041/v1/sh1/dayk/000001?callback=jQuery111208282462776376776_1569062885488&select=date%2Copen%2Chigh%2Clow%2Cclose%2Cvolum

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Machine Learning

Python novice knowledge points outline

For Python, I believe that many people like me want to have this skill, but they can't find a way to learn. Check the information on the Internet, look at it, and be taken off the track, causing themselves to always be in those few. Circulate in knowledge points. In order to solve this problem, I summarized an outline of Python knowledge points, and broke them down, and finally connected the dots to form a line and a connection to form a surface.1. Basic grammar2. Data structure3. File processin

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Machine Learning

How should Python be learned?

Recently, a small partner asked me "how to learn Python?", my advice is to prepare mentally first, the learning process of Python is really painful, and secondly, choose python2 or python3. Then read more books and learn more when you study. Today, I compiled a detailed description of how to learn Python. Hope it can be helpful to everyone!Mentality preparationProgramming is a technique that requires long and repeated practice. So please take every line of code you write seriously and clean up y

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Machine Learning

Python basic study notes: create and use classes

Object-oriented programming is one of the most effective software writing methods. In object-oriented programming, you write classes that represent things and situations in the real world, and create objects based on these classes.When writing a class, you define common behaviors that a large class of objects have. When creating objects based on classes, each object automatically has this general behavior, and then each object can be given a unique personality as needed. The use of object-orient

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Machine Learning

python study notes: conditional statement IF

The Python conditional statement determines the code block to be executed by the execution result (True or False) of one or more statements.You can simply understand the execution process of the conditional statement through the following figure:flow chart The Python programming language specifies any non-zero and non-null values ​​as true, and 0 or null as false.The if statement in Python programming is used to control the execution of the program,Basic formif judgment condition: Execute statem

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Machine Learning

python study notes: multi-process

Our modern operating systems are all operating systems that support "multitasking". For an operating system, a task is a process. For example, to open a browser is to start a browser process.If we compare the core CPU of a calculator to a factory, then the process is like a workshop in a factory, which represents a single task that the CPU can handle. At any time, the CPU always runs a process, and other processes are in a non-running state.You may have some questions when you see this. Other pr

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Machine Learning

python study notes: function closure

This article mainly studies the definition and call of closures, and understands the role of closures. Closures can simplify the code in programming. It is a very important point of knowledge. Let's take a look at it in detail.PrefaceThe closure of a function is actually very similar to the nesting of a function. Everyone should be familiar with the nesting of a function, so let's write a simple function nesting case:Python training notes-function closure" alt="Python training notes-function clo

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