Python – Change Dictionary Items
1. What Does “Change Dictionary Items” Mean?
Changing dictionary items means updating the value of an existing key.
In simple words:
👉 We change value, not the key.
2. Change Value Using Key Name
The easiest way is using the key.
Example
Output:
3. Change Value Using update()
update() is another easy way to change values.
Example
4. Change Multiple Values at Once
Example
5. Change Value Only If Key Exists
Example
6. Change Value in Nested Dictionary
Example
7. Change Values Using Loop
Example
8. Common Beginner Mistakes
❌ Trying to Change Key Name
👉 This removes old key and adds new one.
❌ Accessing Missing Key
✔ This adds a new key, not changes existing one.
9. Simple Practice Examples
Example 1: Update Product Price
Example 2: Update City
Example 3: Increase Marks
10. Summary (Change Dictionary Items)
✔ Use key to change value
✔ update() is easy and clean
✔ Can update many values at once
✔ Values can be changed anytime
✔ Keys should be unique
📘 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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Add Dictionary Items
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Remove Dictionary Items
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Dictionary Methods
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Dictionary Exercises
Just tell me 😊
