6 kyu Array.diff.py

"""
https://www.codewars.com/kata/523f5d21c841566fde000009/train/python


Your goal in this kata is to implement a difference function, which subtracts one list from another and returns the result.

It should remove all values from list a, which are present in list b keeping their order.

array_diff([1,2],[1]) == [2]

If a value is present in b, all of its occurrences must be removed from the other:

array_diff([1,2,2,2,3],[2]) == [1,3]
"""


def array_diff(a, b):
    lst = []
    
    for i in a:
        if i in b:
            continue
        else:
            lst.append(i)
            
    return lst