Convert 2 element list into dict

Question

I know about few of the questions answered here on SO about dict(list) i.e.

l = [['a',1] ['b',2]]

and do dict(l) then we get:

{'a': 1, 'b': 2}

But how to make a list with 2 elements

l = ['a',1]

become a dictionary such as:

{'a':1}

using the dict function?