As far as I can tell, you should be giving exact solutions. If you have these small differences and are using floating point numbers in your solution, they are probably the source of the problem. Try to do it without floats!

not possible anymore :)

Fixed.

I've kumited a "fix".

This is indeed caused by the way the tests are written. The random tests use "from datetime import datetime". So if you use "import datetime" in your code, when the random tests run, "datetime" is changed to mean not the datetime module, but the datetime.datetime class. So "datetime.datetime" is interpreted as "the datetime attribute on the datetime.datetime class" (which does not exist).

This can be avoided by either using "from datetime import datetime" in your own code or by using an alias (e.g., "import datetime as datemodule").

"You solution should" => "Your solution should"

Had the same issue. Had to wrap it in a try/except block specifically for the random tests to strip off the first "datetime". I have no idea why the random tests are doing that, but this seems like it's an issue with the way the tests are written.

I've updated it to 12–13: The first two initials of the first name and middle name, padded with a 9 if no middle name

I agree, first two names was a little confusing :-)

Happy coding ^_^

You're right, sorry. That was from an early miss calculation :-). Description updated, thanks for letting me know.