We can remove items from set by using following methods:
By using remove() method
Elements can be removed from a set by using built-in remove() function.
set_1 = set(['apple','banana','cherry','pineapple'])
print("Initial Set:",set_1)
set_1.remove('cherry')
set_1.remove('pineapple')
print("Final Set:",set_1)
Output:
Initial Set: {'banana', 'apple', 'pineapple', 'cherry'}
Final Set: {'banana', 'apple'}
Note: If the element does not exist in the set then there will be a KeyError .To remove elements from a set without KeyError, use discard().
By using discard() method:
It is used to remove elements from a set. It is also a built-in function. If the element doesn’t exist in the set, it remains unchanged.
set_1 = set(['apple','banana','cherry','pineapple'])
set_1.discard('apple')
print(set_1)
Output: {'banana', 'pineapple', 'cherry'}
By using clear method()
To remove all the elements from the set, clear() function is used.
set_1 = set(['apple','banana','cherry','pineapple'])
set_1.clear()
print(set_1)
Output: set()
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