Python – List Comprehension
1. What is List Comprehension?
List comprehension is a short and easy way to create a new list from an existing list.
In simple words:
👉 It lets you write less code to do the same work.
2. Normal Way vs List Comprehension
Normal Way (Using Loop)
List Comprehension Way
👉 Both give the same result, but list comprehension is shorter.
3. Basic Syntax (Easy)
4. Simple Example
Example
5. List Comprehension with Condition
You can add a condition using if.
Example
6. Change Values Using List Comprehension
Example
7. List Comprehension with String
Example
8. List Comprehension with Numbers
Example
9. Using if–else in List Comprehension
Example
10. Common Beginner Mistakes
❌ Forgetting Brackets
✔ Correct:
❌ Making It Too Complex
Avoid very long list comprehensions at the beginning.
11. Simple Practice Examples
Example 1: Square Numbers
Example 2: Names with Letter A
Example 3: Convert to String
12. Summary (List Comprehension)
✔ Short way to create lists
✔ Cleaner than loops
✔ Can use conditions
✔ Easy to read if simple
✔ Very useful in Python
📘 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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Sort Lists
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Copy Lists
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Join Lists
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Tuple Basics
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List Exercises
Just tell me 😊
