[英]Generic Function to replace value of a key in a dict or nested dict or list of dicts
所以我有一个像这样的词典:
{
"environment": [
{
"appliances": [
{
"services-status": "GOOD",
"ping-status": "REACHABLE"
},
{
"softwareVersion": "16.1-R1-S2 50b46b5 20170829",
"services-status": "GOOD",
"ping-status": "REACHABLE"
}
],
"vd_url": "https://bla1"
},
{
"appliances": [
{
"ipAddress": "10.4.64.108"
"type": "branch",
"sync-status": "IN_SYNC"
},
{
"services-status": "GOOD",
"ping-status": "REACHABLE"
"sync-status": "IN_SYNC"
}
],
"vd_url": "https://bla2"
},
],
"failed_urls": [
"https://gslburl",
"https://gslburl",
"https://localhost",
"https://localhost",
"https://localhost"
]
}
或可能是这样的
{
"softwareVersion": "16.1-R1-S2 50b46b5 20170829",
"services-status": "GOOD",
"ping-status": "REACHABLE"
"vd_url" : "https://blah3"
}
或可能是这样的
{
"environment": [
{
"appliances": [
{
"services-status": "GOOD",
"ping-status": "REACHABLE"
},
{
"softwareVersion": "16.1-R1-S2 50b46b5 20170829",
"services-status": "GOOD",
"ping-status": "REACHABLE"
}
],
"vd_url": "https://bla1"
}
]
}
或者它可以是字典的任意组合,但是我试图实现的是编写一个通用函数,该函数可以接收字典,用另一个值替换键并返回新字典。 只是一个伪代码:
def replace(dict_obj, key, new_value)
for dict in dict_obj:
for k, v in dict.items()
if k == key:
dict[k] = new_value
return dict_obj
但是最后我想要一个与我传递的字典相同的字典对象-dict_obj,但是具有新的值,它应该适用于上面的任何类型的字典。
您可以使用递归来确定键,值对中的值是列表还是字典,然后进行相应的迭代。
def replace(dict_obj, key, new_value):
for k,v in dict_obj.iteritems():
if isinstance(v,dict):
# replace key in dict
replace(v, key, new_value)
if isinstance(v,list):
# iterate through list
for item in v:
if isinstance(item,dict):
replace(item, key, new_value)
if k == key:
dict_obj[k] = new_value
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