Question

my_list = ['one', 'two', 'three', 'four', 'five', 'six', 'seven']

Using python, I need list to be displayed as:

one, two, three
four, five, six
seven

I need it to be flexible, as the list will change frequently.

Answer 1

You can use the grouper recipe from itertools:

def grouper(n, iterable, fillvalue=None):
    "grouper(3, 'ABCDEFG', 'x') --> ABC DEF Gxx"
    args = [iter(iterable)] * n
    return izip_longest(fillvalue=fillvalue, *args)

Use like this:

for line in grouper(3, my_list):
    print ', '.join(filter(None, line))

See it working online: ideone