Python Set pop() Method

Python set pop() Method removes any a random element from the set and returns the removed element.

Python set pop() Method Syntax:

Syntax: set_obj.pop()

Parameter: set.pop() doesn’t take any parameter.

Return: Returns the popped element from the set

Python set pop() Method Example:

Python3

s1 = {9, 1, 0}
s1.pop()
print(s1)

Output:

{9, 1}

Example 1: Basic usage of Python Set pop() Method

Python3

s1 = {1, 2, 3, 4}
s1.pop()
s1.pop()
s1.pop()

print("After 3 elements popped, s1:", s1)

Output:

After 3 elements popped, s1: {4}

Exceptions while using Python Set pop() Method

If the set is empty, then a TypeError is returned as shown by the following program.

Python3

S = {}

# popping an element
print(S.pop())

print("Updated set is", S)

Output:

Traceback (most recent call last):
  File "/home/7c5b1d5728eb9aa0e63b1d70ee5c410e.py", line 6, in 
    print(S.pop())
TypeError: pop expected at least 1 arguments, got 0