関連ワード:  how to replace element in set python    how to remove element in set python    how to change element in set python    how to remove first element in set python    how to remove last element from set in python    how to remove specific element from set in python    how to add and remove elements in set in python    how to remove all elements from set in python    how to remove multiple elements from set in python    how to remove random element from set python