Tuple unpacking in for loops

Question

I stumbled across the following code:

for i,a in enumerate(attributes):
   labels.append(Label(root, text = a, justify = LEFT).grid(sticky = W))
   e = Entry         


        

Answer 1

Enumerate basically gives you an index to work with in the for loop. So:

for i,a in enumerate([4, 5, 6, 7]):
    print i, ": ", a

Would print:

0: 4
1: 5
2: 6
3: 7