Question

what is the output of the following code?
my_set = {1, 2, 3}
my_set.add(2)
print(my_set)
{1, 2, 2, 3}
{1, 2, 3}
error
none of the above
question 11
which method is used to combine two sets?
combine()
merge()
union()
join()

Explanation:

Step1: Understand the properties of a set

In Python, a set is an unordered collection of unique elements.

Step2: Analyze the add() operation

When my_set.add(2) is executed, since the element 2 is already present in the set {1, 2, 3}, adding it again has no effect as sets do not allow duplicate elements.

Step3: Determine the output of print(my_set)

The set remains {1, 2, 3} as the add() operation did not change it due to the uniqueness property of sets.

for Question 11:

Step1: Recall set - related methods

• The combine() method is not a standard set method in Python.
• The merge() method is not a standard set method in Python.
• The union() method is used to combine two sets. If we have two sets set1 and set2, set1.union(set2) (or set1 | set2) returns a new set with all the elements from both sets.
• The join() method is mainly used for strings (e.g., '-'.join(list_of_strings) to concatenate strings in a list with a delimiter), not for sets.

Answer:

{1, 2, 3}