D = {'a': 1, 'b': 2, 'c': 3}
Ks = D.keys( ) # Unordered keys list
print Ks
Ks.sort( ) # Sorted keys list
print Ks
for key in Ks: # Iterate though sorted keys
print key, '=>', D[key]
for key in sorted(D):
print key, '=>', D[key]