2 Python While Loops
1. What is a While Loop?
A while loop is used to repeat code again and again
as long as a condition is true.
In simple words:
👉 Python checks a condition
👉 If it is True, the loop runs
👉 When it becomes False, the loop stops
2. Simple While Loop Example
Example
Output:
3. How While Loop Works
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Check condition
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Run code inside loop
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Update value
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Check condition again
4. While Loop with Condition
Example
5. Infinite While Loop (Be Careful!)
If the condition never becomes false, the loop runs forever.
❌ Example (Infinite Loop)
👉 i is never changed.
6. Stop While Loop Using break
Example
7. Skip One Loop Using continue
Example
8. While Loop with Else
else runs after loop ends normally.
Example
9. While Loop with User Input
Example
10. Common Beginner Mistakes
❌ Forgetting to Update Variable
❌ Infinite loop.
❌ Wrong Indentation
✔ Correct:
11. Simple Practice Examples
Example 1: Print Even Numbers
Example 2: Countdown
Example 3: Sum of Numbers
12. Summary (Python While Loop)
✔ Repeats code while condition is true
✔ Needs condition and update
✔ Be careful of infinite loops
✔ break stops loop
✔ continue skips one step
📘 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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For Loop
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Break & Continue
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Loop Exercises
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Real-Life Loop Examples
Just tell me 😊
