如何返回特定的json字段？

Question

How do I get this function to just return the value "Accounting"?

def getowner():
       z = [{u'_ref': u'network/ZG5zLm5ldHdvcmskMTAuMTAwLjEwMC4wLz90jLzA:10.100.100.0/24/default', u'extattrs': {u'Owner': {u'value': u'Accounting'}}}]
       return ((h['value']) for h in z['Owner'])


z = getowner()
print z

Im getting error TypeError: list indices must be integers, not str

Answer 1

Your z variable is an array (of one element) because of the surrounding square brackets. Here is how I would access what you have:

>>> z[0]['extattrs']['Owner']['value']
u'Accounting'

Answer 2

Change your code to:

def getowner():
   z = [{u'_ref': u'network/ZG5zLm5ldHdvcmskMTAuMTAwLjEwMC4wLz90jLzA:10.100.100.0/24/default', u'extattrs': {u'Owner': {u'value': u'Accounting'}}}]
   return z[0]['extattrs']['Owner']['value']

z = getowner()
print z