A quick example that loops through a predefined list of colours and creates an additional empty list to which a ranger of numbers are added and then printed out.

colors = ['red','blue','green']

assets = []

for colors in colors:
    print "The colours are: %s" % colors

    for n in range(1, 10):
    assets.append(n)

for n in assets:
    print "The number is now: %d" % n