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How to accurately measure the running time of a Python program?

This article discusses accurate Python program execution time measurement. It highlights the limitations of time.time() and advocates for time.perf_counter() and timeit for precise timing. Furthermore, it explores advanced profiling tools like cPro

Mar 03, 2025 pm 05:03 PM

What to do if Python OpenCV 2.4.9 installation fails?

This article addresses difficulties installing the outdated OpenCV 2.4.9 with Python. Common causes include incompatible Python versions, missing dependencies, incorrect build configurations, and permission issues. Troubleshooting steps and alterna

Mar 03, 2025 pm 05:02 PM

Introduction to Parallel and Concurrent Programming in Python

Python, a favorite for data science and processing, offers a rich ecosystem for high-performance computing. However, parallel programming in Python presents unique challenges. This tutorial explores these challenges, focusing on the Global Interprete

Mar 03, 2025 am 10:32 AM

Image Processing Using Python

Image processing with Python's scikit-image library: A practical guide A 1911 newspaper editor famously stated, "Use a picture. It's worth a thousand words." This highlights the crucial role images play in communication, from everyday phot

Mar 03, 2025 am 10:18 AM

Image Filtering in Python

Dealing with noisy images is a common problem, especially with mobile phone or low-resolution camera photos. This tutorial explores image filtering techniques in Python using OpenCV to tackle this issue. Image Filtering: A Powerful Tool Image filter

Mar 03, 2025 am 09:44 AM

How to Implement Your Own Data Structure in Python

This tutorial demonstrates creating a custom pipeline data structure in Python 3, leveraging classes and operator overloading for enhanced functionality. The pipeline's flexibility lies in its ability to apply a series of functions to a data set, ge

Mar 03, 2025 am 09:28 AM

Flask Authentication With LDAP

This tutorial demonstrates Flask application user authentication via LDAP. We'll build a simple app with a home page and login page, verifying credentials against an LDAP server. Successful authentication grants access; otherwise, an error message

Mar 03, 2025 am 09:13 AM

How to Cache Using Redis in Django Applications

This tutorial demonstrates how to leverage Redis caching to boost the performance of Python applications, specifically within a Django framework. We'll cover Redis installation, Django configuration, and performance comparisons to highlight the bene

Mar 02, 2025 am 10:10 AM

How to Work With PDF Documents Using Python

PDF files are popular for their cross-platform compatibility, with content and layout consistent across operating systems, reading devices and software. However, unlike Python processing plain text files, PDF files are binary files with more complex structures and contain elements such as fonts, colors, and images. Fortunately, it is not difficult to process PDF files with Python's external modules. This article will use the PyPDF2 module to demonstrate how to open a PDF file, print a page, and extract text. For the creation and editing of PDF files, please refer to another tutorial from me. Preparation The core lies in using external module PyPDF2. First, install it using pip: pip is P

Mar 02, 2025 am 09:54 AM

JWT Authentication in Django

This tutorial introduces JSON Web Tokens (JWT) and demonstrates JWT authentication implementation in Django. What are JWTs? JWTs are encoded JSON strings used in request headers for authentication. They're created by hashing JSON data with a secret

Mar 02, 2025 am 09:27 AM

PyQuery: Python's jQuery

In this tutorial, you'll have a look at PyQuery object is similar to what you get with $() when using the jQuery library. Just like the html() method in PyQuery, where you will be able to get or set the HTML content of the selected element.Currently,

Mar 01, 2025 am 10:22 AM

Introducing the Natural Language Toolkit (NLTK)

Natural language processing (NLP) is the automatic or semi-automatic processing of human language. NLP is closely related to linguistics and has links to research in cognitive science, psychology, physiology, and mathematics. In the computer science

Mar 01, 2025 am 10:05 AM

How to Download Files in Python

Python provides a variety of ways to download files from the Internet, which can be downloaded over HTTP using the urllib package or the requests library. This tutorial will explain how to use these libraries to download files from URLs from Python. requests library requests is one of the most popular libraries in Python. It allows sending HTTP/1.1 requests without manually adding query strings to URLs or form encoding of POST data. The requests library can perform many functions, including: Add form data Add multi-part file Access Python response data Make a request head

Mar 01, 2025 am 10:03 AM

An Introduction to Python's Flask Framework

This tutorial demonstrates building a simple two-page website using Flask, a lightweight Python web framework. It focuses on static content to establish a foundational workflow, easily expandable for more complex applications. Flask Installation Be

Feb 28, 2025 am 10:23 AM