Sorting python by value in a value dict

Question

Given a dictionary:

d = {'a':{'priority': 10}, 'b': {'priority':20}}

Can I return the keys in a sorted order by priority (in a dict in the value)?

Something like:

>>> print sorted_list ['b', 'a']

do you need to sort with respect to priority or will there be any other keys — The6thSense
– The6thSense, Commented Nov 17, 2015 at 14:17
Sorry, there are other keys, but priority will be the one I sort on. — Jeff
– Jeff, Commented Nov 17, 2015 at 14:45

Daniel Roseman · Accepted Answer · 2015-11-17 14:21:17Z

6

Sure.

sorted_list = sorted(d.keys(), key=lambda i: d[i]['priority'], reverse=True)

answered Nov 17, 2015 at 14:21

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1 Comment

I knew lambda would be the key... Looking that up now... Thanks

Kyle G · Accepted Answer · 2015-11-17 14:21:30Z

By giving sorted a key to sort by, in this case 'priority'

sorted(d, key=lambda e: d[e]['priority'], reverse=True)