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# Python Set | difference()

• Difficulty Level : Basic
• Last Updated : 31 May, 2020

The difference between the two sets in Python is equal to the difference between the number of elements in two sets. The function difference() returns a set that is the difference between two sets. Let’s try to find out what will be the difference between two sets A and B. Then (set A – set B) will be the elements present in set A but not in B and (set B – set A) will be the elements present in set B but not in set A.
Example:

```set A = {10, 20, 30, 40, 80}
set B = {100, 30, 80, 40, 60}

set A - set B = {10, 20}
set B - set A = {100, 60}

Explanation: A - B is equal to the elements present in A but not in B
B - A is equal to the elements present in B but not in A
```

Let’s look at the Venn diagram of the following difference set function. Syntax:

```set_A.difference(set_B) for (A - B)
set _B.difference(set_A) for (B - A)
```

In this program, we will try to find out the difference between two sets set_A and set_B, both the way:

 `# Python code to get the difference between two sets``# using difference() between set A and set B`` ` `# Driver Code``A ``=` `{``10``, ``20``, ``30``, ``40``, ``80``}``B ``=` `{``100``, ``30``, ``80``, ``40``, ``60``}``print` `(A.difference(B))``print` `(B.difference(A))`
Output:
```{10, 20}
{100, 60}
```

We can also use – operator to find the difference between two sets.

 `# Python code to get the difference between two sets``# using difference() between set A and set B`` ` `# Driver Code``A ``=` `{``10``, ``20``, ``30``, ``40``, ``80``}``B ``=` `{``100``, ``30``, ``80``, ``40``, ``60``}``print` `(A ``-` `B)``print` `(B ``-` `A)`
Output:
```{10, 20}
{100, 60}
```

If we have equal sets then it will return the null set.

 `# Python code to get the difference between two sets``# using difference() between set A and set B`` ` `# Driver Code``A ``=` `{``10``, ``20``, ``30``, ``40``, ``80``}``B ``=` `{``10``, ``20``, ``30``, ``40``, ``80``, ``100``}``print` `(A ``-` `B)`
Output:
```set()
```

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