Hi!

I just facing same problem as yours, and here is the reason and how you fix it:

The problem expected you return the int value instead of just print the value out. In this case, you need to convert Nontype datetype to integer datatype to pass the test.

Best regards,

I can not pass the test_01. Can you help me?

No, please read this
Your code is printing instead of returning.

this websites interpreter must have some issues, this is the 3rd challenge i completed correctly but it still returns a fail. is there another code challenge website that actually works correctly?
Fixed tests
Log
0
None should equal 0
Log
1
None should equal 1
Log
111
None should equal 111
Log
51
None should equal 51
Log
2110
None should equal 2110