quite a simple kata i thought, and it is, i thought i was being clever but tests made me feel stupid, Nice Kata!! thanks @GotThat

If you want to use sorted for shortness at least save 'sorted(arr)' in a variable instead to sort two times the same array.

but for some reason everyone votes as usual )

Invalid inputs are not tested in random tests.

Well, it is bad.-

Yes I agree on this.
Better bearing performance in mind

Hmm. ok, i thought i handled for that situation but let me look again. Thanks!

5 is a int, not str. The function accepts str only, that's why it expects returned value of int input to be False.

Hi, can I get help with the 27th test? Is it for the string "5" ? When I try that number i get the right output ("5" => 5).

Here is my readout:

Testing for bad inputs
Test Passed
Log
7 - A
Test Passed
Log
3 + 2 *
Test Passed
Log
/ 7 + 3
Test Passed
Log
5
STDERR:
Traceback:
in
in calculate
TypeError: argument of type 'int' is not iterable

Nice work.

Well, although very similar they are not exactly the same. I think this one is slightly more difficult because of the '0...' numbers and other little instructions.
But anyway, even though they are similar, I wouldn't mark it as an issue, but that's only my opinion!!

Nice kata i like it!!!