Python Set

In Python, a set is an unordered collection of unique elements. You can think of it as a collection of items in which each item can only occur once. Sets are useful for storing and manipulating collections of data in which you only want to keep track of the uniqueness of the elements, rather than their order or frequency.

Here is an example of how to create and use a set in Python:

# create a set
my_set = {1, 2, 3}

# check the type of the set
print(type(my_set))  # Output: <class 'set'>

# add an element to the set
my_set.add(4)

# add multiple elements to the set
my_set.update([5, 6, 7])

# remove an element from the set
my_set.remove(6)

# check if an element is in the set
print(1 in my_set)  # Output: True

# find the length of the set
print(len(my_set))  # Output: 5

# clear the set
my_set.clear()

# check if the set is empty
print(len(my_set) == 0)  # Output: True

Sets have several useful methods and operators that allow you to perform common operations on them, such as adding and removing elements, finding the intersection or difference between sets, and more. You can find more information about sets and their methods in the Python documentation.