Python Set pop() Method

The Python set pop() method removes and returns an arbitrary element from a set. Since sets are unordered, there’s no way to determine which element will be removed. If the set is empty, pop() raises a KeyError.

The syntax of the pop() method is:

set.pop()

Python set pop() Parameters

The pop() method doesn’t take any parameters. It simply removes and returns a random element from the set.

Here are examples demonstrating the pop() method:

# Example 1: Basic pop usage
numbers = {1, 2, 3, 4}
removed = numbers.pop()
print(removed)      # Output: arbitrary element
print(numbers)      # Output: remaining elements

# Example 2: Popping from mixed set
mixed = {'apple', 1, (2, 3)}
element = mixed.pop()
print(element)      # Output: arbitrary element
print(mixed)        # Output: remaining elements

# Example 3: Handling empty set
empty_set = set()
try:
    empty_set.pop()
except KeyError:
    print("Set is empty")  # Output: Set is empty

The pop() method is useful when you need to remove elements from a set one by one.