how to add all of these values in a python dictionary

last one for the night, want to see what clever ways there are with python to add all of the 'count' values from the following type 开发者_如何学编程of dictionary:

{0: {'count': 1000}, 1: {'count': 2000}}

so the end result should be an int value of 3000.

---

>>> x = {0: {'count': 1000}, 1: {'count': 2000}}
>>> sum(v['count'] for v in x.values()) 
3000

---

A shorter one:

sum(d[k]['count'] for k in d)

---

sum(i['count'] for i in d.values())

---

How about using reduction in python?

reduce(lambda x,y: x+y, [v['count'] for v in a.values()])