Python- Convert dictionary to dictionary with list value -


i wanna convert dictionary dictionary list value

i wanna convert : 

 f= {24149423: 59, 22621293.0: 367562.0, 24144369.0: 405017.0, 22662739.0: 276484.0, 22470388.0: 410315.0, 22624054.0: 398444.0, 22614201.0: 380106.0, 22564857.0: 90756.0, 22619259.0: 382386.0, 22692381.0: 388392.0}

to dictionary list value 

b =  {90756.0: [22564857.0], 388392.0: [22692381.0], 367562.0: [22621293.0], 410315.0: [22470388.0], 398444.0: [22624054.0], 382386.0: [22619259.0], 405017.0: [24144369.0], 276484.0: [22662739.0], 59: [24149423], 380106.0: [22614201.0]}

i try write way: 

from collections import defaultdict   b = defaultdict(list)  key, value in sorted(f.iteritems()):     b[value].append(key)

i used map well.

b = map(lambda k, v: f.update({k: v}), keys, values)

but none of these work.

use dict comprehension, this:

b = { v: [k] k,v in f.items() }

[k] one-element list containing key, v value, plays rold of key in resulting dictionary.


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