Question

The variable returns “[ ]” instead of desired results.

S = set(['a', 'b','d','z','x','y'])
collect = set()
step = set([''])
while step:
   step = set(a+b for a in step for b in S if len(a+b) == 6)
   collect |= step
print sorted(collect)

Also how could I make this a loop that plays through the combinations instead of a set?

Answer 1

Without knowing what “desired results” means, here’s your second problem:

>>> len('' + 'a')
1

(First problem is indentation.)

---

So…wtf are you doing with this line?

step = set(a+b for a in step for b in S if len(a+b) == 6)