Python Coding Day 9 | Python List, List Indexing, Changing Data, append(), extend()
✅ Lesson Note : https://chirucodes.blogspot.com/2025/11/py...
✅ Run Codes on Colab : https://colab.research.google.com/drive/1H...
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Welcome to Python Coding Day 9! If you're serious about your coding journey, mastering the Python List is your first major step. The Python List is one of the most fundamental and powerful data structures, essential for organizing data in your apps, games, and projects.
In this comprehensive Python tutorial, we'll dive deep into everything you need to know about working with lists, ensuring you can confidently handle any collection of items.
What You Will Learn:
Python List Fundamentals: Understand what a list is (ordered, changeable, allows duplicates) and how to create one using square brackets [].
List Indexing for Beginners: Learn the crucial concept of 0-based indexing to access any specific element in your list [01:46].
Negative Indexing Shortcut: Master the clever technique of using negative indices (like -1) to access items from the end of the list [02:38].
Changing Data in Lists: See how to modify, replace, or update an existing item by simply referencing its index [03:03].
append() vs. extend() Explained: Clearly understand the difference between the two most vital list modification methods:
Use append() to add a single new item to the end of your list.
Use extend() to merge multiple items from another list into yours [03:34].
If you're ready to master Python's most-used data container, this video is for you.
Timestamps to Navigate the Video:
✅ [00:37] What is a Python List?
✅ [01:46] Understanding List Indexing
✅ [02:38] The Power of Negative Indexing
✅ [03:03] Changing/Modifying List Items
✅ [03:34] The append() vs. extend() Difference
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