What is the appropriate way to access data from Python sets?

Question

If a set that always consists of one element (the element is an element of a custom class which contains different data types) is returned by a function, what is the appropriate way to access that element?

At the moment I just use a for loop to loop through the elements of the set, but since I know that the set will contain only one element there must be a better way to access the data.

So instead of this:

my_set = {'Custom type'}
for i in my_set:
    print(i)

What would be the best way to access the element contained in the set. (Please assume that the content of the actual set is a custom type and not a string like in the example given.)

Answer 1

You can use unpacking:

s = {'item'}  # 1-element set

item, = s   # unpacking (note the comma)
print(item)

Answer 2

You can just use .pop(). It will return an arbitrary item. If it's empty, you'll have KeyError: 'pop from an empty set'

Here's a simple example:

test_set = {'word'}
print(test_set.pop() + ' and another word')