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)) |
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()
Last Updated on October 25, 2021 by admin