Learn Python context managers and the with statement for safe files, locks and database transactions, including custom classes and contextlib examples.
Python Context Managers: Safe Files, Connections and Custom with Blocks Read More »
Learn Python decorators through closures, functools.wraps, logging, timing and configurable wrappers, with practical patterns and common mistakes.
Python Decorators Explained: Logging, Timing and Reusable Function Wrappers Read More »
Understand Python iterables, iterators, generators, yield, lazy file processing, generator expressions, one-pass behavior and practical pipeline design.
Python Iterators and Generators: Lazy Data Processing with yield Read More »
Learn Python list comprehensions with transformations, filters, conditional expressions, nested loops, dictionary and set comprehensions, and readability rules.
Python List Comprehensions: Filters, Conditions, Nested Loops and Readability Read More »
Learn Python match-case with literal, OR, sequence, mapping and class patterns, guards, practical examples, common mistakes and an order-routing exercise.
Python match-case: Pattern Matching with Guards and Real Examples Read More »
Many browser tests follow the same steps with different inputs. A login flow may use valid, invalid and locked accounts. Copying a separate test method for every variation makes a suite difficult to maintain. TestNG Data Providers offer a cleaner approach: one test method receives multiple data sets and runs the same scenario for each
TestNG Data Providers with Selenium: Build a Data-Driven Framework Read More »
A suite that runs on one laptop and one browser gives limited confidence. Real users use different browsers and environments. Selenium Grid distributes tests to remote browser sessions, while Docker makes the Grid environment easier to reproduce. Together, they provide a practical route from local execution to controlled cross-browser testing. What Docker Selenium Grid Solves
Docker Selenium Grid Guide: Run Parallel Cross-Browser Tests Read More »
Traditional WebDriver commands send an instruction to the browser, wait for a response and continue. That remains the foundation of Selenium automation. WebDriver BiDi adds another capability: a test can subscribe to selected browser events and receive information while a scenario is running. “BiDi†means bidirectional, describing communication that can flow to and from the
WebDriver BiDi Basics: A Practical Guide for Selenium Testers Read More »
Selenium setup used to begin with a repetitive task: download a browser driver, place it on the correct path and keep it compatible with the installed browser. Selenium Manager reduces that work. In current Selenium 4 releases, it can detect a local browser, obtain a compatible driver when needed and return the driver path to
Selenium Manager Guide: Automatic Driver Setup in Selenium 4 Read More »
Turn a simulated service failure into a factual timeline and a small set of owned improvements. A practical guide with a workflow, evidence checklist, common errors and learner questions.
DevOps Incident Postmortem Guide: Timeline, Root Cause, Actions and SLO Learning Read More »
