spam = ['apples', 'bananas', 'tofu', 'cats']
# write a program that takes a list of any size and seperates it's items with a comma and a space and returns it.
#with an and on the last item.
#in this case it should return 'apples, bananas, tofu, and cats'


def split_list(your_list):
    for i in your_list:
        if your_list.index(i) < (len(your_list) - 1):
            return(str(i) + ', ')
        else:
            return('and ' + str(i))

split_list(spam)