Not kata-related.

The data type of the characteristics column is Text.
column_name data_type
characteristics text

So when you try to select the distinct value of that column, the whole text is compared against the other rows.

id name characteristics
1 Cyril big, smelly
2 Tiny small, stinky, smelly

So give the above, it will check the "big, smelly" against "small, stinky, smelly" which are two different strings, even though the second one has a characteristic that the first one has.

i don't get the instructions

@luthfirinda but functions are basic python

13k+ completions.

To make it possible to past all tests obviously.

@topping thank you sir!

@loukis i really don't know dude... i just know basic python :/

num_of_persons_that_didnt_got_the_joke += 1

def is just the keyword that starts the beginning of a function. When you write a function you write def and then the name of the function and then its parameters in parentheses followed by a colon.

... but what exactly is your suggestion?

very hard kata, impossible to pass all tests :D

sir, i don't get what "def" for. I've google it but still don't get it.
Can someone explain to me? I'm new born baby to this python