Python Set

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1) Create a Set

Ask the user to enter 5 values (any type) and store them in a set. Print the set.

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2) Set From List

Given the list:

lst = [1, 2, 2, 3, 3, 4]

Convert it to a set and print.

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3) Add Single Item

Create an empty set and add one item using add(). Print the set.

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4) Add Multiple Items

Start with a set and add several items one by one using a loop.

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5) Remove an Item

Create a set with a few numbers and remove one using remove(). Print result.

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6) Discard vs Remove

Create a set and try to remove an item that doesn’t exist using discard(), then using remove(). Observe behavior.

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7) Loop Through Set

Create a set and print each element using a for loop.

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8) Set Length

Create a set and print its length using len().

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9) Check Membership

Ask user for a number and check if it’s in a set.

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10) Clear Set

Create a set, use clear(), and print.

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11) Union of Sets

Given two sets:

a = {1, 2, 3}
b = {3, 4, 5}

Print the union.

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12) Intersection of Sets

Using the same sets above, print the intersection.

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13) Difference of Sets

Find and print items in a that are not in b.

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14) Symmetric Difference

Print items that are in either a or b but not both.

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15) Copy a Set

Copy a set to another variable and print both.

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16) Set without Duplicates

Ask user to enter values separated by spaces, split into a list, convert to a set, and print.

Example input:

1 2 2 3 3 3

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17) Add Tuple to Set

Create a set and add a tuple inside it (allowed). Print result.

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18) Remove All Even Numbers

Create a set of numbers from 1–10 and use a loop to remove even numbers.

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19) Compare Subsets

Ask user to create two sets and check if one is a subset of the other.

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20) Superset Check

Ask user for two sets and print whether the first is a superset of the second.

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📝 Notes for Students

🔹 Sets are unordered collections of unique items. 🔹 Common methods/properties:

Operation	Method
Add item	add()
Remove item	remove() / discard()
Clear all	clear()
Union	union() or `
Intersection	intersection() or &
Difference	difference() or -
Symmetric diff	symmetric_difference() or ^
Check subset	issubset()
Check superset	issuperset()

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