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  🐍 Python Developer Roadmap (2026 – Industry-Ready) This roadmap is practical, career-oriented, and role-focused. Follow it step by step and you’ll move from basics → job-ready → senior-level thinking.   1️ ⃣ Python Fundamentals (Non-Negotiable) Goal: Write clean, confident Python code Data types: int, float, str, list, tuple, dict, set Control flow: if/else, loops Functions & arguments Exception handling File handling Virtual environments (venv, pip) PEP-8 coding standards   📌 Outcome: You can solve problems without googling basics. 2️ ⃣ Advanced Python (Must for Professionals) Goal: Think like a Python engineer OOP (classes, inheritance, polymorphism) Modules & packages Decorators & generators Context managers (with) Multithreading vs multiprocessing Async programming (asyncio) Memory management & garbage collection   📌 Outcome: You write efficient, maintainable code.   3️ ⃣ Data Str...

 Automation QA Engineer Roadmap (2026 – Industry-Ready) This roadmap is practical, no-fluff, and aligned with what real automation jobs expect today—not just tool knowledge.   🧱 Phase 0: Mandatory Manual QA Foundation (Before Automation) If you skip this, your automation career will stall. You must already know: SDLC / STLC Test design techniques (BVA, EP, Decision Table) Bug lifecycle & defect writing Agile & sprint testing Basic API testing (manual)   📌 Automation ≠ replacing testing 📌 Automation = coding test logic correctly   🖥️ Phase 1: Programming Fundamentals (0–2 Months) Choose ONE language and go deep: Recommended Languages Java (enterprise standard) Python (fast learning, QA-friendly) JavaScript / TypeScript (modern, frontend-heavy teams) What you must learn Variables, loops, conditions Functions / methods OOP concepts Class, Object Inheritance Polymorphism Exception handling Collecti...

 Manual QA Engineer Roadmap (2026 – Practical & Career-Focused) This roadmap is written for someone who wants to stay employable, respected, and promotable as a Manual QA — not stuck doing only basic test cases.   🧱 Phase 1: Strong Testing Foundations (0–2 Months) Core concepts you must master (non-negotiable):   SDLC & STLC Test levels: Unit, Integration, System, UAT Test types: Smoke, Sanity, Regression, Exploratory Black-box techniques Boundary Value Analysis (BVA) Equivalence Partitioning Decision Tables Deliverables you should practice: Test Plan Test Scenarios Detailed Test Cases RTM (Requirement Traceability Matrix)   📌 Reality check: If you can’t explain why a test case exists, you’re not ready. 🖥️ Phase 2: Web & Mobile Testing Skills (2–4 Months) Web testing Browser compatibility (Chrome, Firefox, Edge)   HTML/CSS basics (read-only, not coding) Cookies, cache, sessions Forms, validation...

Here is a code which shows how to find and replace multiple text in a file using Python: search_text_1 = "36419" search_text_2 = "250847" search_text_3 = "2764437" search_text_4 = "OOGGT" i=1 for j in range(2000):     with open('C:\\Users\\Original\\'               'source_filename.txt', 'r') as file:         data = file.read()         GS = int(search_text_1) + i         data1 = data.replace(search_text_1, str(GS))     with open('C:\\Users\\Original\\Champ\\'               'E_EI4.20213.024.35.X1.243_' + str(i) + '.txt', 'w') as file:         file.write(data1)     with open('C:\\Users\\Original\\Champ\\'               'E_EI4.20213.024.35.X1.243_' + str(i) + '.txt', 'r') as file:         data = file.read()         N9 = int(search_text_2) ...

  Following are some important Linux commands:  Linux commands: Important note: Admin user in windows = root user in linux   1.         uname -           It will show the kernal name   2.       Uname – r -           It will show the Kernal latest release   3.       Uname – r -           It will show the Kernal version   4.       Uname – m -           It will show the Kernal machine (32/64 bit)   5.       Uname – o -           It will show the Kernal OS (Operating System)   6.       Uname – a -           To ...

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 Below is the program to Create empty files with same names and different extensions present in a specific directory in python. Here is the code: import glob import os path = 'C:\\Users\\Test\\Documents\\2025\\August\\6 Aug\\Email\\' add_extension = ".ok" i=1 for i, filename in enumerate(glob.glob(path + '*.xml')):     new_filename = filename + add_extension     try:         with open(new_filename, 'w') as f:             pass  # No content is written, so the file remains empty         print(f"Empty file '{new_filename}' created successfully.")     except IOError as e:         print(f"Error creating file: {e}")