Some help would be fine here, thank you! I dont know what I am doing wrong here

I run the same syntax in my terminal and it returns "treeHOUSE", but I still can't get through this challenge.

challenge: I need you to create a new function for me.

This one will be named sillycase and it'll take a single string as an argument.

sillycase should return the same string but the first half should be lowercased and the second half should be uppercased.

For example, with the string "Treehouse", sillycase would return "treeHOUSE".

Don't worry about rounding your halves, but remember that indexes should be integers. You'll want to use the int() function or integer division, //.

code: [alt text]https://w.trhou.se/usg2yq3imv

def sillycase('treehouse'):
    lowered_case = string[0:4:].lower()
    uppered_case = string[4:11:].upper()
    return lowered_case + uppered_case