Python for loop iterate over dict pairs

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Python

Python3.3

i have api call response as below,

x = response.json()

{'selectedColumns': [], 'totalRows': 2, 'pageNumber': 0, 'pageSize': 0, 'searchResults': 
{'items': [
{'id': '199', 'tiName': 'host-a', 'cmbMake': 'Cisco Systems', 'cmbModel': 'Catalyst C2960G-48TC-L', 'tiCustomField_CDP Neighbors': "[{'dest_host': ' AAA', 'sysname': ''}, {'dest_host': ' BBB', 'sysname': ''}]"}, 
{'id': '1504', 'tiName': 'host-b', 'cmbMake': 'Cisco Systems', 'cmbModel': 'Catalyst C2960-48TC-L', 'tiCustomField_CDP Neighbors': "[{'dest_host': ' CCC', 'sysname': ''}, {'dest_host': ' DDD', 'sysname': ''}]"}
]}}

What I have tried:

y = x['searchResults']['items']

keys = {"tiCustomField_CDP Neighbors","id"}
res = {}
l = []
for i in y:
    for k, v in i.items(): 
        if k in keys:
            sub = {k: v}
            res.update(sub)
            l.append(res)
out = l
print(out)  

based on above code i am getting output as:

[{
    "id": "1504",
    "tiCustomField_CDP Neighbors": "[{'dest_host': ' CCC', 'sysname': ''}, {'dest_host': ' DDD', 'sysname': ''}]"
},
{
    "id": "1504",
    "tiCustomField_CDP Neighbors": "[{'dest_host': ' CCC', 'sysname': ''}, {'dest_host': ' DDD', 'sysname': ''}]"
}]

the way i wanted is:

[
    {
        "id": "199",
        "tiCustomField_CDP Neighbors": "[{'dest_host': ' AAA', 'sysname': ''}, {'dest_host': ' BBB', 'sysname': ''}]"
    },

    {
        "id": "1504",
        "tiCustomField_CDP Neighbors": "[{'dest_host': ' CCC', 'sysname': ''}, {'dest_host': ' DDD', 'sysname': ''}]"
    }
]

Please any one suggest the right way of for loop so that i get above output.

i am running python3. also i am new to python. still trying to learn it.apologies for any mistakes that i did.