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Sets in Python

 



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Sets in Python

Sets are an unordered collection of unique elements in Python. They are defined using curly braces {} or the set() function.

Creating a Set

You can create a set by placing a comma-separated list of elements within curly braces or by using the set() function.

# Creating sets
set1 = {1, 2, 3}
set2 = set([4, 5, 6])

Set Operations

Sets support various operations like union, intersection, difference, and symmetric difference.

# Set operations
set_a = {1, 2, 3, 4}
set_b = {3, 4, 5, 6}

# Union
set_union = set_a | set_b  # Output: {1, 2, 3, 4, 5, 6}

# Intersection
set_intersection = set_a & set_b  # Output: {3, 4}

# Difference
set_difference = set_a - set_b  # Output: {1, 2}

# Symmetric Difference
set_sym_difference = set_a ^ set_b  # Output: {1, 2, 5, 6}

Adding and Removing Elements

You can add elements to a set using the add() method and remove elements using the remove() or discard() methods.

# Adding and removing elements
my_set = {1, 2, 3}

# Add an element
my_set.add(4)  # Output: {1, 2, 3, 4}

# Remove an element
my_set.remove(3)  # Output: {1, 2, 4}

# Discard an element
my_set.discard(2)  # Output: {1, 4}
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