This article walks through a Python fan's question about implementing algebraic functions, presenting two solutions—one using basic arithmetic operators and another leveraging the sympy library—complete with code snippets, explanations, and visual illustrations to help beginners understand the approach.
This article provides a detailed step‑by‑step tutorial on what Jupyter Notebook is, how to install it via Anaconda or pip, configure its settings, use its various interfaces, extend its functionality with extensions, manage kernels, employ shortcuts, and properly close and exit the application.
This article presents a Python script that reads seven judges' scores for a singer, removes the highest and lowest marks, then calculates and displays the total and average scores, illustrating the solution with a complete code example.
This article walks through a Python regex question, demonstrating how to use named and anonymous groups with clear code samples, visual output, and step‑by‑step explanations to help readers grasp pattern matching concepts effectively.
This article explains essential time series preprocessing techniques—including data sorting, handling missing values with interpolation methods, applying rolling averages, Fourier transform denoising, and detecting anomalies using rolling statistics, isolation forests, and K‑means clustering—illustrated with Python code on the AirPassengers and Google stock datasets.
This article walks through creating a Python program that simulates the popular Chinese card game ZhaJinHua, covering deck construction, random dealing to five players, hand‑type evaluation, scoring, and ranking, with complete source code and a concise explanation of each step.
This tutorial walks you through creating a simple aiohttp web application that fetches random Mars rover photos from the NASA API, validates image quality using Pillow, and serves the images directly, covering environment setup, async code, and deployment options.
This tutorial explains how to use Python, ADB commands, OpenCV image recognition, and Tencent OCR to automate weekly tasks in the Onmyoji mobile game, including boss battles, realm breakthroughs, and resource farming, while handling multi‑instance switching and random delays for stability.
This tutorial walks through building a simple Fruit Ninja‑style game in Python using Pygame, covering imports, window setup, random fruit generation, drawing text and lives, handling game over screens, and implementing the main loop with event processing and scoring.
This guide walks you through setting up a Windows environment with PyCharm, mitmproxy, and Appium to capture Douyin video URLs, filter them, and download the videos automatically using Python scripts that drive the mobile app and handle network traffic.
The article shares practical Python programming lessons, covering indentation errors, syntax differences between Python 2 and 3, multithreading pitfalls, the importance of planning code logic, leveraging built‑in functions, and focusing on clear objectives to write efficient, maintainable scripts.
The article reviews three notable 2022 machine‑learning advancements—CatBoost, Amazon SageMaker's DeepAR forecasting, and the low‑code PyCaret library—explaining their unique advantages, typical use‑cases, and why they are expected to gain traction among data scientists.
This article introduces several Python libraries—including Optuna, ITMO_FS, shap‑hypertune, PyCaret, floWeaver, Gradio, Terality, and torch‑handle—that simplify hyperparameter tuning, feature selection, model explainability, visualization, and low‑code ML workflows, providing code examples and key advantages for each tool.
This article curates ten essential Python learning resources—including websites, books, open‑source projects, and community platforms—to help programmers deepen their knowledge and practice Python in a structured, Pythonic way.
This article compiles a comprehensive list of essential PyCharm shortcut keys, covering code editing, navigation, searching, running, debugging, refactoring, and general operations, to help Python developers work more efficiently and boost productivity.
This tutorial introduces pyecharts, a Python wrapper for Echarts, covering installation (including Tsinghua mirror), Python 2 compatibility, and step‑by‑step code examples for creating Bar, Pie, Boxplot, Line, Radar, Scatter, Grid, and Overlap charts with rendering to HTML.
This article demonstrates eight practical ways to leverage Python's built‑in modules directly from the command line—such as testing ports, launching a web server, formatting JSON, creating a simple editor, building executable archives, encoding/decoding data, retrieving system metadata, and compressing files—without writing any Python code.
This tutorial demonstrates how to build an interactive fruit‑sales dashboard using Python's Dash framework together with Tailwind CSS for styling, covering data preparation with Pandas, chart creation with Plotly, layout design, and deployment on a local server.
The article introduces trypackage, a lightweight Python CLI utility that automatically creates a temporary virtual environment, installs a specified package, launches an interactive shell with the package pre‑imported, and offers various options for Python version, shell type, persistence, and configuration.
This article introduces four fundamental sorting algorithms—bubble sort, insertion sort, merge sort, and quick sort—explaining their concepts, step‑by‑step operations, and providing complete Python implementations to help readers understand and apply these techniques effectively.
This article outlines four key areas for modern Python development—type hinting, virtual environment and package management tools, recent syntax enhancements like pattern matching and the walrus operator, and testing frameworks—providing practical guidance for writing robust, up‑to‑date Python code.
The February TIOBE Programming Community Index shows Python reclaiming the top spot for the fifth time, highlights a shift from Alexa to Similarweb for data collection, and provides detailed rankings and trends for the top 100 programming languages, offering developers insight into language popularity and future considerations.
This article introduces three popular Python libraries for building text‑based terminal user interfaces—Curses, npyscreen, and Urwid—explaining their features, installation steps, key code examples, and practical tips for creating interactive command‑line applications.
This article presents a collection of thirteen Python game development examples, each with a brief description, gameplay illustration, and complete source code using libraries such as pygame and PyQt5, covering games like coin collector, ping‑pong, skiing, space shooter, whack‑a‑mole, dinosaur runner, match‑3, Tetris, snake, 24‑point puzzle, balance beam, alien invasion, and tic‑tac‑toe.
This article explains the difference between dynamic and static typed languages, illustrates how Python's simple assignment works at the memory level, describes shared references, and shows how to use the built‑in type() function to inspect object types.
This article describes how a Python‑based diff utility was created to compare old and new API responses during a promotion change‑record migration, detailing its implementation, handling of JSON structures, improvements over the first version, and plans for integration with an API testing platform.
This tutorial shows how to use Python, OpenCV, and Pillow to capture, process, and animate Wuhan University’s cherry blossom scenes, turning pixel data into a time‑lapse video with custom text overlays and frame‑by‑frame control.
This article introduces a complete Python ski game built with Pygame, explaining the game mechanics, displaying screenshots of the interface and animation, and providing the full source code along with required image assets for readers to understand and recreate the project.
This article outlines ten lesser‑known Python security pitfalls—from optimized‑away asserts and directory permission quirks to path traversal, regex misuse, Unicode normalization attacks, and IP address normalization—illustrating how subtle language features can lead to serious vulnerabilities in real‑world applications.
This article walks readers through creating a classic Sokoban-style game using Python 3.6.4 and the Pygame library, covering environment setup, sprite and map class definitions, UI handling, game loop logic, and final integration with start, transition, and end screens.
The article explains how Python determines the order of evaluation for multiple operators by using precedence rules and associativity, lists the full precedence table, illustrates left‑ and right‑associative operators with examples, and offers best‑practice tips for writing clear expressions.
This article compares the lookup speed of Python lists and sets on large datasets, presents benchmark code and results, and explains why sets are dramatically faster by examining the internal C‑level implementations of list (dynamic array) and set/dict (hash table) including resizing rules and collision‑resolution strategies.
This step‑by‑step guide shows how to use Huawei Cloud ModelArts and the U‑2‑Net AI model to create a personalized portrait for Valentine’s Day, covering account registration, environment configuration, data and code download, dependency installation, generation, and result display.
This article presents a collection of practical Python tricks, covering efficient input handling, condition evaluation with all/any, odd‑even checks, variable swapping, palindrome detection, inline conditional expressions, duplicate removal, frequency analysis, list comprehensions, flexible argument passing, enumeration, string joining, dictionary merging, sorting, and pretty‑printing, each illustrated with clear code examples.
This guide explains how to use Python's requests library to brute‑force DVWA login pages at low and medium security levels, detailing code snippets, request headers, payload construction, response handling, and result logging to CSV or TXT files.
This article introduces a collection of practical yet under‑utilized Python capabilities—including arbitrary‑argument functions, file searching with glob, debugging with inspect, unique ID generation, hashing, serialization, compression, and atexit shutdown hooks—providing code examples and explanations for each.
The TIOBE Index released its February 2022 ranking, showing the top‑20 programming languages with Python, C and Java each gaining over 1% and highlighting shifts such as PHP re‑entering the top ten, Go climbing to 11th, and detailed listings for positions 21‑100.
This article presents two straightforward music recommendation methods—content‑based filtering using audio features and collaborative filtering using playlist data—detailing their design ideas, key Python and Go code snippets, model training, evaluation, and possible improvements.
This article introduces the GerapyPlaywright package, explains how to install it, configure Scrapy to use Playwright via middleware and PlaywrightRequest, and provides a complete example spider with code snippets and logging output for JavaScript‑rendered page crawling.
This tutorial demonstrates how to programmatically obtain a QQ Music QR‑code login session using Python by fetching the QR image, extracting and decrypting the required cookies, handling dynamic parameters, and completing the login flow with detailed code examples and explanations.
This tutorial demonstrates how to use Python and Selenium to automatically log in, upload videos and cover images, set titles, descriptions, tags, and publish short videos on the Qutoutiao platform, providing complete source code and step‑by‑step instructions.
This article provides a step‑by‑step Python programming tutorial for the traditional Chinese two‑player game "Gan Zi Lao Hu Ji Chong", detailing numeric mappings, conversion functions, round evaluation, and probability simulation to help learners build and test the game logic.
This article explains how probabilistic programming languages work and walks through building a minimal PPL in Python, covering model definition, latent and observed variables, DAG traversal, log‑density computation, and extensions such as posterior grid approximation.
This tutorial demonstrates two pandas approaches to retrieve each user's highest‑priority label based on ordered tags, covering data preparation, grouping, custom sorting with key functions, deduplication, and the explode method, complete with code snippets and performance considerations.
This article explains how Python’s elegant a,b = b,a variable swap works under the hood by examining bytecode, stack manipulation with ROT_TWO, evaluation order nuances, and the differences when swapping more than two variables, providing clear code examples and interpreter insights.
This article introduces six popular open‑source projects—including a Chinese web developer roadmap, a Rust‑based drawing app, a JSON‑driven low‑code backend framework, a Tencent live‑stream low‑code solution, a Python Faker library, and the Datart data‑visualization platform—providing brief descriptions and repository links for each.
This article explains how to retrieve specific values from a pandas DataFrame with a MultiIndex by resetting the index, using query, chaining .loc calls, tuple indexing, and swapping index levels, providing clear code examples and useful tips for efficient data extraction.
This guide explains frequently confused Python operations, compares Python idioms with C/C++ conventions, introduces essential standard‑library tools, and offers performance‑oriented debugging techniques to help developers write cleaner, faster, and more reliable Python code.
This article walks through a practical Python solution for inserting one PDF into another using the PyPDF2 library, covering three possible strategies, selecting the simplest page‑by‑page method, providing installation instructions, and presenting complete example code with explanations.
This article outlines four essential modern Python concepts—type hinting, virtual environment and package management tools, recent syntax enhancements such as pattern matching and the walrus operator, and advanced testing frameworks—providing developers with the knowledge needed to write clean, efficient code in 2022 and beyond.
The article argues that despite widespread criticism, PHP remains highly popular and indispensable for web development, citing its long‑standing ecosystem, ease of use, massive market share, and the practical advantages it offers over languages like Python in real‑world projects.
This tutorial shows how to exchange selected values between two columns in a pandas DataFrame using boolean masking and NumPy indexing, providing two practical methods with complete code examples and explanations.
This article demonstrates how to reshape a one‑dimensional dataset into a two‑dimensional table using pandas, covering the data requirements, import steps, and two practical methods—pivot_table with a custom aggregation function and the unstack technique—complete with code snippets and visual results.
Learn how to generate grayscale, random color, gradient, and custom visualizations using only NumPy (and optional Matplotlib ColorMaps) with concise Python code, covering array creation, image conversion, pixel manipulation, and advanced colormap techniques for powerful data art.
This article introduces the open‑source Command2API tool, explains its origin in internal security testing, describes its simple Python‑based architecture that runs commands in a thread and serves results through an HTTP API, provides usage examples, examines the source code, and suggests possible improvements.
This article curates a wide range of high‑quality video tutorials, books, and online resources covering Python fundamentals, web crawling, data analysis, machine learning, Go language development, and front‑end technologies, offering practical recommendations and rating scores to help learners choose suitable study material.
This article introduces PyWebIO, a Python library that lets developers create web‑based interactive applications with simple input and output functions, eliminating the need for HTML or JavaScript, and demonstrates installation, a BMI calculator example, and core input/output APIs.
This article introduces Python’s collections module as a versatile alternative to built‑in containers, detailing the purpose, key methods, and practical code examples for Counter, defaultdict, OrderedDict, namedtuple, deque, and ChainMap, helping developers choose the right specialized container for their tasks.
This article explains how to overcome Python's Global Interpreter Lock by installing ipyparallel, configuring parallel profiles, and using engines, DirectView, and LoadBalancedView to run both synchronous and asynchronous tasks, with code examples and performance comparisons.
This tutorial demonstrates how to generate a rotating Earth animation by mapping a latitude‑longitude texture onto a circular canvas using Python's Pillow, NumPy, and imageio libraries, detailing the steps of point selection, spherical coordinate conversion, pixel mapping, and GIF assembly.
This article walks through two common Excel‑automation tasks—merging a named sheet from two workbooks and consolidating the second sheet of every file in a folder—using concise pandas code, complete with step‑by‑step explanations and runnable examples.
IPython 8.0, released after three years of development, brings improved error tracebacks with stack‑data integration, richer auto‑completion suggestions, automatic Black code formatting in the CLI, and refined %history handling, while requiring Python 3.8 or newer.
This article demonstrates how to use Python and the Pillow library to download character glyphs, create background images, and programmatically generate Chinese Spring Festival couplets in both vertical and horizontal layouts, providing complete source code and sample outputs.
This article shows how to pull specific fields from a JSON‑like string obtained during web crawling by applying Python regular expressions or the split() function, providing complete code examples and visual results for each method.
This article explains several Python techniques—using identical break conditions, flag variables, exceptions, loop‑else clauses, and function returns—to exit nested loops, demonstrated through a prime‑number game where the program stops when a non‑prime input is entered.
This article benchmarks Python list versus set lookups on large datasets, explains why sets are dramatically faster, and delves into the internal C‑level implementations of list as a dynamic array and set/dict as hash tables, including resizing rules and collision handling.
This article explains the fundamental differences between threads and processes, the role of Python's Global Interpreter Lock, and provides a comprehensive guide to using the multiprocessing and concurrent.futures modules—including their main classes, synchronization primitives, and practical code examples—for effective concurrent programming in Python.
This comprehensive Pandas tutorial walks you through loading CSV and Excel files, creating Series and DataFrames, performing basic operations, cleaning data, handling missing values, working with hierarchical indexes, grouping, merging, concatenating, and applying time‑series techniques, all illustrated with clear code examples and screenshots.
This tutorial introduces Streamlit—a Python library for building interactive web apps—covering installation, layout, widgets, data caching, charting, and example projects such as dynamic data exploration and a face‑detection demo, all with complete code snippets.
This tutorial explains how to use Python's Pygame library to generate random-colored, expanding ripple circles that originate from mouse clicks, complete with code examples and visual screenshots of the resulting effect.
This article introduces five advanced Plotly visualization techniques—including animated bar charts, scatter animations, sunburst diagrams, parallel categories, parallel coordinates, and gauge indicators—showcasing how to create dynamic, interactive graphics in Python to make data stories more compelling and insightful.
This article explains how running a Python file directly with python3 script.py differs from using python3 -m module, focusing on the resulting changes to sys.path, import behavior, and the search order of modules.
This tutorial demonstrates how to collect the top 2000 entries of the 2021 China Hurun Rich List using Python's requests library, process the data with pandas, and create insightful visualizations in Tableau, covering data extraction, cleaning, and analysis steps.
Playwright, Microsoft’s open‑source end‑to‑end UI testing framework, supports all major browsers, multiple programming languages, isolated contexts, auto‑waiting, and powerful selectors, making it a fast‑growing alternative to Selenium for developers seeking reliable, cross‑browser automation.
FastAPI is a high‑performance, easy‑to‑learn Python web framework that lets you build robust APIs quickly, offering features like speed, concise code, automatic validation, and OpenAPI compatibility, with simple installation via pip and interactive documentation out of the box.
Learn how to delete elements from Python lists using three primary methods—remove for value-based removal, pop for index-based removal that returns the element, and del for deleting by index, range, or entire objects—complete with clear code examples and key usage notes.
This tutorial demonstrates how to build a simple aiohttp web server in Python, install required dependencies, retrieve random Mars photos from the NASA API, validate image size and color mode using Pillow, and serve the selected image directly to the browser.
This tutorial demonstrates how to load the Fashion MNIST dataset, explore and preprocess the images, build and compile a neural network with TensorFlow 2.x, train the model, evaluate its accuracy, and use the trained model to make predictions on clothing images, providing complete Python code examples throughout.
This tutorial introduces pyecharts, the Python wrapper for Baidu's Echarts library, explains how it generates a render.html file, and provides complete code examples for drawing various map visualizations—including basic maps, maps without labels, visual‑mapped maps, world maps, and regional maps—while also showing how to replace the dummy data with your own dataset.
This article compares six Python alternatives to traditional classes—plain classes, tuples, dictionaries, named tuples, attrs, dataclasses, and Pydantic—examining their syntax, validation capabilities, mutability, string representation, JSON (de)serialization, memory usage, and performance to help developers choose the most suitable data‑modeling approach.
This guide walks through the required PyCharm settings—including interpreter selection, run/debug configurations, pytest integration, devserver options, and troubleshooting tips—so developers can run and debug the Sentry codebase effectively within the IDE.
This article compares PyInstaller and Nuitka for turning Python projects into standalone executables, highlighting Nuitka's dramatically smaller file size, faster build times, and better performance while explaining installation steps, command‑line options, and how to handle third‑party dependencies.
This article introduces a Python 2.7 script that automates the creation of iOS and Android app icons and screenshots, detailing required environments, usage commands, code explanation, and platform-specific considerations such as icon sizes, rounding for Android, and handling of portrait and landscape images.
The article demonstrates, with Python code, how applying class_weight—first using the default logistic regression, then the balanced option, and finally manually tuned weights via grid search—can raise the F1 score from 0 to about 0.16 on imbalanced data, and discusses further techniques such as feature engineering and threshold adjustment.
This article explains Python's conditional (ternary) operators, the use of if‑else expressions, logical and/or operators, recursion fundamentals including stack frames and recursion limits, and demonstrates list, set, and dictionary comprehensions with clear code examples.
This tutorial explains how to work with time‑series data in Python, covering dataset preparation, resampling techniques, Prophet forecasting, LSTM‑based prediction, and hierarchical clustering, while illustrating each step with visual examples and code snippets.
This article examines PEP 659, the Specializing Adaptive Interpreter proposed for CPython, explains its non‑JIT approach, details the warm‑up, adaptive, specializing and de‑optimisation phases, and walks through the actual source‑code implementation using the LOAD_GLOBAL instruction as a concrete example.
This guide introduces BertViz, an interactive visualization tool for transformer models such as BERT, GPT‑2 and T5, explains how to install it via pip along with required dependencies, and demonstrates head, model, and neuron view visualizations with code examples in Jupyter.
This tutorial shows how to fetch real‑time COVID‑19 data from Baidu, then use Python's pyecharts library to build province‑level maps and a dynamic timeline carousel, complete with code snippets and visual results.
This guide introduces Uber's open‑source Kepler.gl library for geospatial visualization in Jupyter notebooks, covering installation via pip, a simple map example, adding CSV or DataFrame data, customizing through the UI, retrieving configurations, and exporting the map to an HTML file.
This tutorial explains how to build a high‑performance Minesweeper bot in Python by capturing the game window, segmenting the board into 16×16 pixel cells, recognizing each cell’s state via OpenCV color analysis, and applying a simple logical algorithm to flag mines and click safe squares.
This article demonstrates how to use MediaPipe's Python API to extract 468 3D facial landmark points, configure detection parameters, and visualize the results with OpenCV, providing code examples and references to related research papers.
Flybirds is a BDD‑based, open‑source UI automation framework for mobile apps that provides a plug‑in architecture, CLI scaffolding, multilingual support, rich reporting, and seamless integration with CI pipelines, enabling developers to write natural‑language feature files and run them on Android and iOS devices.
This article explains a Python fan's question about extracting list items that contain specific keywords, presents two practical solutions—regular list indexing and using the operator module—and shows the resulting outputs with code snippets and screenshots.
This article walks through the complete implementation of an Alien Invasion game using Python's Pygame library, explaining the modular structure, key classes, functions, and game mechanics while providing full source code for each component.
This tutorial demonstrates how to create a lightweight Streamlit web app in Python that lets users select and run common NLP services—sentiment analysis, named‑entity recognition, and text summarization—by integrating libraries such as TextBlob, spaCy, and Gensim, with clear code examples and visual output.
This guide explains how to set up a Flask backend on Windows or CentOS, generate the required signatures for WeChat's unified order API, obtain a prepay_id, and call the mini‑program wx.requestPayment interface with the correct parameters for successful payment processing.
This article demonstrates how to use a Python script to perform a brute‑force attack against the DVWA login page by sending HTTP GET requests with custom headers and payloads, iterating over username and password dictionaries, recording response status, content length, and saving results to CSV or TXT files.
This tutorial explains how to create a Siri‑style conversational robot in Python by configuring the environment, describing the speech‑recognition and chatbot principles, and showing the implementation that uses Baidu speech recognition and the Turing chatbot API.
This tutorial walks you through collecting movie information from Maoyan using Python web‑scraping, storing the results in CSV, and then applying pandas, matplotlib, and WordCloud to analyze and visualize trends such as release years, genres, regions, durations, and ratings across China and the world.
