Python Lists
1. What is a List?
A list is a collection of many values stored in one variable.
In simple words:
👉 A list is like a box that can hold many items.
Example
2. Why Use Lists?
Lists help us:
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Store many values together
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Access items easily
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Change items when needed
3. Creating a List
Lists are written using square brackets [ ].
Example
4. Accessing List Items (Index)
Each item in a list has a position number (index).
Index starts from 0.
Example
5. Negative Indexing
Negative index starts from the end.
Example
6. Changing List Items
Lists are changeable (mutable).
Example
7. List Length
Use len() to find how many items are in the list.
Example
8. Adding Items to a List
Using append() (Add at end)
Using insert() (Add at position)
9. Removing Items from a List
Using remove()
Using pop()
10. Loop Through a List
Example
11. Checking Item in List
Example
12. Common Beginner Mistakes
❌ Wrong Index
❌ Error: index out of range.
❌ Forgetting Quotes
✔ Correct:
13. Simple Practice Examples
Example 1: Number List
Example 2: Sum of List
Example 3: Change Item
14. Summary (Python Lists)
✔ Lists store many values
✔ Index starts from 0
✔ Lists are changeable
✔ Use append(), insert(), remove()
✔ Very useful in real programs
📘 Perfect for Beginner eBook
This chapter is ideal for:
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Python beginner books
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School & college students
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Self-learners
If you want next, I can write:
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List Methods (in detail)
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List Exercises
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Tuples
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Sets
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Dictionaries
Just tell me 😊
