efficient way to remove from set python code example

Example 1: remove an item from a set python

# it doesn't raise error if element doesn't exits in set

thisset = {1, 2,3}

thisset.discard(3)

print(thisset)

Example 2: remove element form set in python

list1 = {1,2,3,4}
list1.remove(4)
print(list)
# {1,2,3}