我正在获取大量数据作为字典列表。但是,我想重新格式化为嵌套字典。我不确定嵌套字典的工作方式。我想添加我尝试过的代码,但发布时似乎出现错误。无法添加更多代码。我将在评论部分中添加。 我的词典列表在其中。
source = [
{
"account_id": "111111111111",
"instance_id": "i-xxxxxxxxxxx",
"instance_profile_arn": "arn:aws:iam::111111111111:instance-profile/x",
"region_name": "eu-central-1"
},
{
"account_id": "111111111111",
"instance_id": "i-aaaaaaaaaaa",
"instance_profile_arn": "arn:aws:iam::111111111111:instance-profile/aa",
"region_name": "us-east-1"
},
{
"account_id": "22222222222",
"instance_id": "i-bbbbbbbbb",
"instance_profile_arn": "arn:aws:iam::22222222222:instance-profile/sadf",
"region_name": "eu-central-1"
},
{
"account_id": "22222222222",
"instance_id": "i-ccccccccccc",
"instance_profile_arn": "arn:aws:iam::22222222222:instance-profile/sds",
"region_name": "us-east-1"
},
{
"account_id": "33333333333",
"instance_id": "i-eeeeeeeee",
"instance_profile_arn": "arn:aws:iam::33333333333:instance-profile/dsf",
"region_name": "eu-west-1"
}
我要这样格式化。
{
"111111111111": {
"eu-central-1": {
"i-xxxxxxxxxxx": "arn:aws:iam::111111111111:instance-profile/x"
},
"us-east-1": {
"i-aaaaaaaaaaa": "arn:aws:iam::111111111111:instance-profile/aa"
}
},
"22222222222": {
"eu-central-1": {
"i-bbbbbbbbb": "arn:aws:iam::22222222222:instance-profile/sds"
},
"us-east-1": {
"i-ccccccccccc": "arn:aws:iam::22222222222:instance-profile/sds"
}
},
"33333333333": {
"eu-west-1": {
"i-eeeeeeeee": "arn:aws:iam::33333333333:instance-profile/dsf"
}
}
}
我尝试过的代码。
for each in source:
list_dict.append({
each['account_id']: {
each['region_name']: {
each['instance_id']: each['instance_profile_arn']
}
}
})
print(list_dict)
我想将输出写入csv文件。 我将不胜感激。
答案 0 :(得分:2)
尝试使用setdefault
初始化丢失的键并随时更新值。
source = { .. } # source dict
result = {}
for v in source:
(result.setdefault(v['account_id'], {})
.setdefault(v['region_name'], {})
.update({v['instance_id']: v['instance_profile_arn']}))
print(result)
{'111111111111': {'eu-central-1': {'i-xxxxxxxxxxx': 'arn:aws:iam::111111111111:instance-profile/x'},
'us-east-1': {'i-aaaaaaaaaaa': 'arn:aws:iam::111111111111:instance-profile/aa'}},
'22222222222': {'eu-central-1': {'i-bbbbbbbbb': 'arn:aws:iam::22222222222:instance-profile/sadf'},
'us-east-1': {'i-ccccccccccc': 'arn:aws:iam::22222222222:instance-profile/sds'}},
'33333333333': {'eu-west-1': {'i-eeeeeeeee': 'arn:aws:iam::33333333333:instance-profile/dsf'}}}
答案 1 :(得分:0)
您可以执行以下操作:
result = dict();
for item in source:
account: = item['account_id']
region = item['region_name']
if account not in result:
result[account] = dict()
if region not in result[account]:
result[account][region] = dict()
instance = item['instance_id']
instance_profile = item['instance_profile_arn']
result[account][region][instance] = instance_profile