Converting a list into comma-separated string with “and” before the last item - Python 2.7

Question

I have created this function to parse the list:

listy = [\'item1\', \'item2\',\'item3\',\'item4\',\'item5\', \'item6\']


def coma(abc):
    for i in abc[0:-         


        

Answer 1

def oxford_comma_join(l):
    if not l:
        return ""
    elif len(l) == 1:
        return l[0]
    else:
        return ', '.join(l[:-1]) + ", and " + l[-1]

print(oxford_comma_join(['item1', 'item2', 'item3', 'item4', 'item5', 'item6']))

Output:

item1, item2, item3, item4, item5, and item6

Also as an aside the Pythonic way to write

for i in abc[0:-1]:

is

for i in abc[:-1]: