How to reverse order of keys in python dict?

Question

This is my code :

a = {0:'000000',1:'11111',3:'333333',4:'444444'}

for i in a:
    print i

it shows:

0
1
3
4

but I want it to show:

4
3
1
0

so, what can I do?

Answer 1

for i in reversed(sorted(a.keys())):
    print i