• Issue with code tests?

Question related to mission All Upper I


I solved this quite some time ago and my code checked out fine. I have been going back and publishing answers for my students and when I checked my old code, it didn't work with the new test cases. Specifically, the fifth test gave the following results:

Your result:False

Right result:True

Fail:is_all_upper("45 DIG ee 5 ITS1 23")

Since the "ee" in the middle of the string is clearly NOT uppercase, is there an issue with the "Right result" (i.e., should it be False, not True), or am I just missing something?