def f(alphabet, s): a = [x for x in alphabet if x.upper() in s] if s.upper() == s: a.append('all_uppercased') return a assert f('abcdefghijklmnopqrstuvwxyz', "uppercased # % ^ @ ! vz.") == []
assert f(??) == []
assert f('abcdefghijklmnopqrstuvwxyz', "uppercased # % ^ @ ! vz.") == ??