data = {
"acc_id": "AAA",
"cont_id": "CCC",
"location": [
{
"x": 123,
"y": 323,
"z": 444
},
{
"x": 123,
"y": 323,
"z": 444
},
{
"x": 123,
"y": 323,
"z": 444
}
]
}
data['location'] = list(map(dict, {frozenset(d.items()) for d in data['location']}))
print(data)
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