How can I write JSON in file in s3 directly in Python?

Question

I have data in python as a=[{a:1,b:1},{a:3,b:3}]. How can I write these JSON in S3 (boto3) as file directly in Python?

What have you tried already to write JSON data to S3? Where will your python code run to write the data as you may need to consider access policies as well. — st.huber
– st.huber, Commented Sep 27, 2021 at 10:23

Hamza usman ghani · Accepted Answer · 2021-09-27 07:18:05Z

3

import json
import boto3

s3 = boto3.client('s3')
a=[{"a":1,"b":1},{"a":3,"b":3}]
s3.put_object(
     Body=json.dumps(a),
     Bucket='your_bucket_name',
     Key='your_key_here'
)

answered Sep 27, 2021 at 7:18

Hamza usman ghani

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3 Comments

Sundar Over a year ago

thanks, will the file contains only {a:1,b:1} {a3:,b3} not the array [{"a":1,"b":1},{"a":3,"b":3}]

Hamza usman ghani Over a year ago

You can read the json and pass to body without json.dump() if it's already str

Sundar Over a year ago

I have tried this, it is writing as array of json values, but how to append json records in a file without array? can you help me ?

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