Write a Python function that does the following:

Its name is differences

It takes two sets as arguments: set$\_(1)$ and set$\_(2)$

It calculates and returns the number of elements that are different $($not in common$)$ between the two parameter sets

It returns an integer with the number of different elements

Test cases:

print$($ differences$(\{1,2,3\},\{2,3,4,5\}))$ # $3$ print$($ differences$(\{\text{'}$john$\text{'},$ 'mark', 'paul'$\},\{\text{'}$john$\text{'},$ 'mark'$\}))$ # $1$

Name the program differences.py$.$ Make sure that gradescope gives you the points for passing the test case.