How to convert json to csv with single header and multiple values? - json

Question

I have input
data = [
{
"details": [
{
"health": "Good",
"id": "1",
"timestamp": 1579155574
},
{
"health": "Bad",
"id": "1",
"timestamp": 1579155575
}
]
},
{
"details": [
{
"health": "Good",
"id": "2",
"timestamp": 1588329978
},
{
"health": "Good",
"device_id": "2",
"timestamp": 1588416380
}
]
}
]
Now I want to convert it in csv something like below,
id,health
1,Good - 1579155574,Bad - 1579155575
2,Good - 1588329978,Good - 1588416380
Is this possible?
Currently I am converting this in simple csv, my code and response are as below,
f = csv.writer(open("test.csv", "w", newline=""))
f.writerow(["id", "health", "timestamp"])
for data in data:
for details in data['details']:
f.writerow([details['id'],
details["health"],
details["timestamp"],
])
Response:
id,health,timestamp
1,Good,1579155574
1,Bad,1579155575
2,Good,1579261319
2,Good,1586911295
So how could I get the expected output? I am using python3.

Answer 1

You almost have done your job, I think you do not need use csv module.
And CSV does not mean anything, it just a name let people know what it is. CSV ,TXT and JSON are same things to computers, they are something to record the words.
I don't know whole patterns of your datas, but you can get output value you want.
output = 'id,health\n'
for data in datas:
output += f'{data["details"][0]["id"]},'
for d in data["details"]:
if 'health' in d:
output += f'{d["health"]} - {d["timestamp"]},'
else:
output += f'{d["battery_health"]} - {d["timestamp"]},'
output = output[:-1] + '\n'
with open('test.csv', 'w') as op:
op.write(output)