You're printing the result instead of returning it. Or doing recursion wrong.
Your recursion is wrong.
... what kind of error?
check your python version and make sure you're not doing somehow changing the code while copy pasting
Loading collection data...
You're printing the result instead of returning it. Or doing recursion wrong.
Your recursion is wrong.
... what kind of error?
check your python version and make sure you're not doing somehow changing the code while copy pasting