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Writing Unit Tests for Python Applications with Pytest: A Basic to Practical Guide

By admin March 22, 2026

Pytest is a powerful framework for writing unit tests for Python applications. This article provides detailed instructions on how to install and configure test cases, from basic to advanced concepts like fixtures, parameterization, and mocking. You'll also learn how to run tests and measure code coverage to ensure code quality.

Python

Python and Linux: Useful Sysadmin Scripts for Task Automation

By admin March 22, 2026

How to effectively handle repetitive tasks on Linux? Python is the answer. This article guides you on writing useful Python scripts to automate system administration work, helping you be more efficient and reduce risks.

Python

Object-Oriented Programming (OOP) in Python: A Hands-on A-Z Guide for New IT Professionals

By admin March 21, 2026

Object-Oriented Programming (OOP) in Python is a fundamental skill for building large, maintainable applications. This article guides you from basic Class, Object, and the 4 pillars of OOP to advanced techniques and practical tips, with detailed code examples.

Development

Free Online Data Conversion Tools: Efficient CSV to JSON, JSON to YAML, SQL to CSV

By admin March 18, 2026

In software development, converting data between formats like CSV, JSON, YAML, and SQL is essential. This article will guide you on using ToolCraft's free online tools for secure and efficient data conversion, along with practical examples and personal experiences.

Python

Automating Email Sending with Python smtplib: Practical Experience and Useful Tips

By admin March 18, 2026

I use Python to automate various tasks, and email sending is an indispensable part of it. This article shares practical experience in implementing automated email sending with smtplib in Python, from basic to advanced.

Development

Effective Code Review: Enhancing Code Quality and Programming Skills for New Developers

By admin March 18, 2026

Code review is one of the most powerful tools for enhancing code quality and programming skills for developers. This article will guide you from the most basic steps for a quick code review to detailed techniques and practical tips for improving efficiency.

Development

Quick Tips for Efficient Online JSON Formatting and Validation Without Installation

By admin March 16, 2026

JSON is an essential data format in modern IT development. This article guides you on how to effectively format and validate JSON online, saving time and improving data accuracy, especially when working with APIs or system configurations.

Development

Build an Auto-Deploy Webhook: No More SSH at 2 AM

By admin March 16, 2026

A practical guide to building a Python Flask webhook server that automatically deploys when you push code to GitHub. From writing the script and configuring systemd to connecting with GitHub Webhooks — set it up once, use it forever.

Python

Processing CSV and Excel Files with Python pandas: Comparing Approaches and Practical Implementation Guide

By admin March 16, 2026

Compare three approaches for handling CSV and Excel files with Python: the csv module, pandas, and openpyxl — analyzing trade-offs and guidance on choosing the right tool for each scenario, with real-world examples from an automation project.

Development

Introduction to Infrastructure as Code: A Guide to Automating AWS Infrastructure with Terraform

By admin March 15, 2026

After 6 months running Terraform in production, I walk through the entire journey — from realizing ClickOps was a problem, to installation, writing configs, and safely managing state files with an S3 backend. This article focuses on real-world lessons, not theory.