—

instead of “from foo import bar”, use “import foo.bar” or “from foo import bar as baz”.

Instead of
scores = []
for s in line.split(”): scores.append(int(s))

you can do
scores = [int(score) for score in line.split()]
or even more compactly
scores = map(int, line.split())
although many woud perfer the list comp.

should be:
keys.sort(reverse=True)