I'd like to compare two lists. I'd like to find elements in the first list that don't have a corresponding entry in the second list (order doesn't matter):
a = ['hi', 'hi', 'bye', 'hi']
b = ['hi', 'hi', 'bye']
So I would like the output to be
c = ['hi']
since the first list has an extra 'hi' in it that doesn't appear in the second list.
If I do one of the usual techniques, I can use a list comprehension:
[x for x in a if x not in b]
which gives me [], which is not what I want.
Things I've tried involve using the set operator, which have the same outcome, since that operation reduces the members of the list to uniqueness.
This seems like a simple operation. Do I need to enumerate each element in the lists first, and create tuples to compare? Do I need to put them into a Counter dict? All this sounds a little bit like overkill when I just want to a simple comparison of the elements in a list!