Python nested dict comprehension

Question

Can someone explain how to do nested dict comprehensions?

>> j = dict(((x+y,0) for x in \'cd\') for y in \'ab\')
>> {(\'ca\', 0): (\'da\', 0), (\         


        

Answer 1

dict((x+y,0) for x in 'cd' for y in 'ab')