Increment of array/list element

[peachdot]

hi,

i want to create an array element of increment value in a loop.

example:
a=[0,1,2,3,4,5,0,1 ,2,3,4,5,0,1,2, 3,4,5]

output of my code :
a=[0,1,2,3,4,5,0,0 ,0,0,0,0,0,0,0, 0,0,0]

how do i fill in the rest of the array element?help!

thanks-

a=[0 for i in range(18)]
for i in range(6):
	a[i]=i

[bvdet]

a=[0 for i in range(18)]
pos = 0
for j in range(3):
    for i in range(6):
        a[i+pos]=i
    pos += 6

a1 = [i for i in range(6)]
a1 *= 3