# What is the use of the "difference" function in Python?

In Python, the **difference()** function is used to perform the set difference operation. The set difference between two sets is a new set that contains the elements that are present in the first set but not in the second set. The **difference()** function can take one or more sets as arguments and returns a new set that represents the difference. Here's an example:

```
set1 = {1, 2, 3, 4, 5}
set2 = {4, 5, 6, 7}
difference_set = set1.difference(set2)
print(difference_set) # Output: {1, 2, 3}
```

In this example, the **difference()** function is used to compute the difference between **set1** and **set2**. The resulting set **difference_set** contains the elements that are in **set1** but not in **set2**, which are **3**.

The **difference()** function can also be invoked using the minus operator (**-**) as a shorthand notation:

```
set1 = {1, 2, 3, 4, 5}
set2 = {4, 5, 6, 7}
difference_set = set1 - set2
print(difference_set) # Output: {1, 2, 3}
```

Both approaches produce the same result: a new set that contains the elements present in the first set but not in the second set.

The **difference()** function is useful when you want to find the elements that are unique to a particular set or want to remove specific elements from a set. It can be handy for set operations such as filtering data, finding distinct values, or removing unwanted items from a set based on certain criteria.