我希望比较两个词典。目标是找出之前存在的键,但不是之后(丢失),以及匹配键中更改的值(已更改)
我有一个伪工作脚本,但问题是它没有显示更改的键/值对所属的所有键。
import json
from pprint import pprint
def new_keys(d1, d2, result={}):
for key in d1.keys():
if not d2.has_key(key):
result[key] = d1[key]
else:
if isinstance(d1[key], dict) and isinstance(d2[key], dict):
new_keys(d1[key], d2[key], result)
else:
if d1[key] != d2[key]:
result[key] = d2[key]
return result
with open("before.json") as data_file:
before = json.loads(data_file.read())
with open("after.json") as data_file:
after = json.loads(data_file.read())
pprint(new_keys(before,after))
目前的结果是:
{u'1.1.1.1/32': {u'directlyConnected': True,
u'hardwareProgrammed': True,
u'kernelProgrammed': True,
u'routeAction': u'drop',
u'routeType': u'static',
u'vias': []},
我想要的一个示例结果是:(它是一个不同的路由0.0.0.0/0而不是1.1.1.1/32)但请注意它嵌套在vrfs,default,routes keys中。
{u'vrfs': {u'default': {u'allRoutesProgrammedHardware': True,
u'allRoutesProgrammedKernel': True,
u'defaultRouteState': u'reachable',
u'routes': {u'0.0.0.0/0': {u'directlyConnected': False,
u'hardwareProgrammed': True,
u'kernelProgrammed': True,
u'metric': 0,
u'preference': 1,
u'routeAction': u'forward',
u'routeType': u'static',
u'vias': [{u'interface': u'Management1',
u'nexthopAddr': u'10.31.32.1'}]},
我怀疑我需要以某种方式跟踪密钥,因为我更深入,但我在编码时遇到了困难。
非常感谢任何帮助!
编辑:示例JSON
{
"vrfs": {
"default": {
"routes": {
"2.2.2.2/32": {
"kernelProgrammed": true,
"directlyConnected": true,
"routeAction": "forward",
"vias": [
{
"interface": "Ethernet4"
}
],
"hardwareProgrammed": true,
"routeType": "static"
}
},
"allRoutesProgrammedKernel": true,
"routingDisabled": false,
"allRoutesProgrammedHardware": true,
"defaultRouteState": "reachable"
}
}
}
之后 -
{
"vrfs": {
"default": {
"routes": {
"2.2.2.2/32": {
"kernelProgrammed": true,
"directlyConnected": true,
"routeAction": "forward",
"vias": [
{
"interface": "Ethernet9"
}
],
"hardwareProgrammed": true,
"routeType": "static"
}
},
"allRoutesProgrammedKernel": true,
"routingDisabled": false,
"allRoutesProgrammedHardware": true,
"defaultRouteState": "reachable"
}
}
}
界面值已更改。
答案 0 :(得分:0)
这是基于我上面评论的可能解决方案。还有一些pythonic的改进。使用iteritems()
和key not in dict
。
import json
from pprint import pprint
def new_keys(d1, d2, result={}):
for key, d1_val in d1.iteritems():
if key not in d2:
result[key] = d1_val
else:
if isinstance(d1_val, dict) and isinstance(d2[key], dict):
# Don't pass result.
new_result = {}
new_keys(d1[key], d2[key], new_result)
# If new_result is not empty
if new_result:
result[key] = new_result
else:
if d1_val != d2[key]:
result[key] = d1_val
return result
with open("before.json") as data_file:
before = json.loads(data_file.read())
with open("after.json") as data_file:
after = json.loads(data_file.read())
pprint(new_keys(before,after))
使用json之前和之后的样本,这就是我得到的
{u'vrfs': {u'default': {u'routes': {u'2.2.2.2/32': {u'vias': [{u'interface': u'Ethernet4'}]}}}}}