def case_sensitive(s):
    low = [x for x in s if x==x.upper()]
    return [low == [], low]


'''
Your task is very simple. Given an input string s, case_sensitive(s),
 check whether all letters are lowercase or not. Return True/False and
 a list of all the entries that are not lowercase in order of their
 appearance in s.

For example, case_sensitive('codewars') returns [True, []],
 but case_sensitive('codeWaRs') returns [False, ['W', 'R']].
'''
