In [8]: a={'x':11,'y':22,'c':4}
In [9]: import operator
In [10]: sorted(a.items(),key=operator.itemgetter(1))
Out[10]: [('c', 4), ('x', 11), ('y', 22)]
In [11]: a={'x':11,'y':22,'c':4}
In [12]: sorted(a.items(),key=lambda x:x[1])
Out[12]: [('c', 4), ('x', 11), ('y', 22)]

# sorted的结果是一个list
  dic1SortList = sorted( dic1.items(),key = lambda x:x[1],reverse = True)

import operator
sorted_x = sorted(d.items(),key = operator.itemgetter(1))

x = [{'name':'Homer', 'age':39}, {'name':'Bart', 'age':10}] 
sorted_x = sorted(x, key=operator.itemgetter('name')) 
print sorted_x 
#[{'age': 10, 'name': 'Bart'}, {'age': 39, 'name': 'Homer'}] 
sorted_x = sorted(x, key=operator.itemgetter('name'), reverse=True) 
print sorted_x 
#[{'age': 39, 'name': 'Homer'}, {'age': 10, 'name': 'Bart'}] 
sorted_x = sorted(x, key=lambda x : x['name']) 
print sorted_x 
#[{'age': 10, 'name': 'Bart'}, {'age': 39, 'name': 'Homer'}] 
sorted_x = sorted(x, key=lambda x : x['name'], reverse=True) 
print sorted_x 
#[{'age': 39, 'name': 'Homer'}, {'age': 10, 'name': 'Bart'}]