Yeah!It's now work.

Thanks!

In all three languages an empty string is to be returned if the empty string is the input itself, as it containes no character other than [A-Za-z ]; fixed the description to make it more clear :)

Thanks for the feed, sayfidz; actually Ruby's test code was not right; now it works fine and the description should be not ambigous anymore :)

Fixed, thanks!

You must return, not print values :)

I agree on the first part, but as a tranlator I felt obliged to respect the original author's will to keep it a tad easier and thus return a string instead of an error. No big deal anyway, if you ask me.

Imho handling extra spaces was not an issue, but I edited the code a bit so that now the random strings are generated without leading or trailing spaces.

Thanks for your feed :)

It worked like a charm to me: maybe the servers were down for a moment?

Try again and let me know :)

Sorry for the mishap, I have improved the description and added an example: if the string contains any character which is NOT alphabetic (in the above example there is a 0), then you return "Not letters" :)

I struggle a bit with my python solution, all of the standard tests are passed but i always get an error on the random tests.

Testing for 'UgUSkt0KiVOSezr'
It should work for random inputs too: 'U' should equal 'Not letters'

'U' is the right answer here, isn't it?