Day 3: Python Data Structures You MUST Know for Data Science! #learnpython #datascience

#python #vscode #datascience #machinelearning #genai #agenticai #pythonbeginners #codingforbeginners #datasciencetutorial #pythonsetup Welcome to Day 3 of my 120-Day Data Science Series! Today’s video covers some of the most important foundations you need before moving into Data Analysis, Machine Learning, NLP, Gen AI, and Agentic AI. In this lesson, we explore Python Data Structures, NumPy, Pandas, Matplotlib, and NLP basics with NLTK, along with simple EDA (Exploratory Data Analysis) steps. This is a MUST-WATCH for every Data Science beginner! 🔥 What You Will Learn in Day 3 📌 Section 3 — Python Data Structures Understand and practice the core Python structures used in Data Science: list — Ordered & mutable tuple — Ordered & immutable dict — Key–value pairs set — Unique, unordered values These structures form the backbone of data cleaning, feature engineering, and dataset handling. 📌 Section 4 — Working with Essential Data Science Libraries Today you will learn how to use the most important Python libraries: NumPy Arrays Mathematical operations Reshaping Pandas Creating DataFrames head(), info(), describe() Handling missing values Grouping & aggregations Matplotlib Basic visualizations Histograms Bar charts Scatter plots 📌 NLP with NLTK (Basics) Learn the core text-processing tools: Tokenization Stopwords Lemmatization These are essential for building NLP and Gen-AI pipelines. 📌 EDA Basics Covered in the Video Inspecting data (head, info, describe) Detecting missing values Simple visualizations Grouping & summary statistics 🚀 About This 120-Day Data Science Series This is a complete step-by-step journey designed to take you from zero to job-ready Data Scientist. Daily videos include: Python for Data Science Pandas, NumPy, Matplotlib, Seaborn SQL, Power BI, Tableau Machine Learning end-to-end NLP, Gen AI, Agentic AI Case studies Portfolio projects Make sure to subscribe and follow along every day! 🔗 Resources & Links 📘 Notebook / Code Files: https://drive.google.com/drive/folder... ▶️ Day 1 – VS Code Installation:    • How to Install VS Code for Python (Step-by...   ▶️ Day 2 – Python Basics:    • Day 2: Python Basics for Data Science (Beg...   📂 Full Playlist (120-Day Data Science Series):    • 120 Day Data Science Series   🔗 Follow Me on Socials 📸 Instagram:   / datascientistafzal.ai   💼 LinkedIn:   / afzal-mansury   📢 WhatsApp Channel: https://whatsapp.com/channel/0029VaCL... 🌐 TopMate (Ask me Anything): https://topmate.io/dashboard/home 🎥 Gear & Products I Use (Affiliate Links) 🎙️ Hollyland Lark M2 Combo : https://amzn.to/4nqWpst 💡 Digitek Ring Light : https://amzn.to/4oLDauW 📷 Digitek Tripod : https://amzn.to/43BjscY 💻 My Laptop Lenovo LOQ 2025 AMD Ryzen 7 250| NVIDIA RTX 5050 8GB : https://amzn.to/4ocqbCp 🎬 My Gaming Chair: https://amzn.to/4qAYrsI Other Title “Install VS Code for Python & Data Science | Beginner Series 2025”, “How to Install VS Code for Python (Step-by-Step) | Day 1 of Data Science Series”, “Data Science for Beginners – Day 1: Install VS Code & Set Up Python Environment”, “Start Your Data Science Journey – Day 1: Install VS Code the Right Way!”, “VS Code Installation Tutorial (Python Setup) | Data Science Series Day 1”, “Day 2: Python Basics for Data Science (Beginners Guide) | 120-Day Data Science Series”, “Python Basics You MUST Know for Data Science | Day 2 of 120-Day Data Science Series”, “Learn Python for Data Science – Day 2 | Essential Python Basics (120-Day Series)”, “Python for Data Science Beginners – Day 2 | Variables, Loops, Functions Explained”, “Day 2: Essential Python for Data Science | Variables, Loops, Functions | 120-Day Series, “Day 3: Python Data Structures, NumPy & Pandas Basics | 120-Day Data Science Series”, “Python Data Structures for Data Science (Lists, Tuples, Dicts) | Day 3 of 120-Day DS Series”, “Day 3: Python Data Structures + NumPy, Pandas & EDA Basics | Data Science Series (120 Days)”, “Learn Python Data Structures for Data Science | Day 3: NumPy, Pandas, NLP Basics”, “Python for Data Science – Day 3: Data Structures, NumPy, Pandas, Matplotlib (120-Day Series)”, “Day 3: Essential Python Data Structures for Data Science | NumPy & Pandas Explained”, “Python Data Structures & NumPy/Pandas Basics | Day 3 of Data Science Series”