# Python Set | difference()

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)) ` |

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**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) ` |

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**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) ` |

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**Output:**

set()

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