set.clear
Remove all items from the set.
Python 3.13
set.clear()Return value
Nothing (None); the set is changed in place.
Examples
Clearing a set
Python 3.13
s = {1, 2, 3}
s.clear()
print(s)set()
The set itself is cleared, not the variable
Python 3.13
s = {1, 2}
same = s
s.clear()
print(same, len(same))set() 0
Details
An empty set is printed as set() because {} means an empty dictionary. The change is visible through all variables that refer to this set.