Python – Join Sets
1. What Does “Join Sets” Mean?
Joining sets means combining two or more sets.
Remember:
👉 Sets store only unique values
👉 Duplicate values are removed automatically
2. Join Sets Using union()
union() combines all items from both sets.
Example
Output:
3. Join Sets Using | Operator
This is a short way to join sets.
Example
4. Join Multiple Sets
Example
5. Join Set with List or Tuple
union() can join different data types.
Example
6. Update One Set Using update()
update() adds items to the same set.
Example
7. Difference Between union() and update()
| Method | Creates New Set | Changes Original |
|---|---|---|
union() |
✔ Yes | ❌ No |
update() |
❌ No | ✔ Yes |
8. Common Beginner Mistakes
❌ Expecting Duplicate Values
Duplicates are removed automatically.
❌ Using + Operator
❌ Error: sets do not support +.
9. Simple Practice Examples
Example 1: Join City Sets
Example 2: Use |
Example 3: Update Set
10. Summary (Join Sets)
✔ Use union() to create new set
✔ Use | for short join
✔ Use update() to change same set
✔ Duplicate values removed
✔ Sets store unique data
📘 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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Set Methods (full)
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Set Exercises
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Dictionaries (easy)
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Dictionary Methods
Just tell me 😊
