DomaŠi zadatak br. 8
1. Add each of the following functions to seqtools.py module:
As usual, work on each of these one at a time until they pass all of the tests in comments.
2. Write a function recursive_count that returns the number of occurences of target in nested_number_list:
As usual, your function should pass the tests in comments.
3. Write a function flatten that returns a simple list of numbers containing all the values in a nested_number_list:
Run your function to test function calls given in comments.