A simple one, but I've just not yet been able to wrap my head around parsing nested lists and json structures in Python...
Here is the raw message I am trying to parse.
{
"Records": [
{
"messageId": "1b9c0952-3fe3-4ab4-a8ae-26bd5d3445f8",
"receiptHandle": "AQEBy40IsvNDy33dOhn4KB8+7apBecWpSuw5OgL9sw/Nf+tM2esLgqmWjGsd4n0oqB",
"body": "{\n \"Type\" : \"Notification\",\n \"MessageId\" : \"dce5c301-029f-55e1-8cee-959b1ad4e500\",\n \"TopicArn\" : \"arn:aws:sns:ap-southeast-2:062497424678:vid\",\n \"Message\" : \"ChiliChallenge.mp4\",\n \"Timestamp\" : \"2020-01-16T07:51:39.807Z\",\n \"SignatureVersion\" : \"1\",\n \"Signature\" : \"oloRF7SzS8ipWQFZieXDQ==\",\n \"SigningCertURL\" : \"https://sns.ap-southeast-2.amazonaws.com/SimpleNotificationService-a.pem\",\n \"UnsubscribeURL\" : \"https://sns.ap-southeast-2.amazonaws.com/?Action=Unsubscribe&SubscriptionArn=arn:aws:sns:ap-southeast-2:062478:vid\"\n}",
"attributes": {
"ApproximateReceiveCount": "1",
"SentTimestamp": "1579161099897",
"SenderId": "AIDAIY4XD42",
"ApproximateFirstReceiveTimestamp": "1579161099945"
},
"messageAttributes": {},
"md5OfBody": "1f246d643af4ea232d6d4c91f",
"eventSource": "aws:sqs",
"eventSourceARN": "arn:aws:sqs:ap-southeast-2:062497424678:vid",
"awsRegion": "ap-southeast-2"
}
]
}
I am trying to extract the Message in the body section, ending up with a string as "ChiliChallenge.mp4\\"
Thanks! Essentially I just keep getting either TypeError: string indices must be integers or parsing the body but not getting any further into the list without an error.
Here's my attempt:
import json
with open ("event_testing.txt", "r") as myfile:
event=myfile.read().replace('\n', '')
str(event)
event = json.loads(event)
key = event['Records'][0]['body']
print(key)
you can use json.loads
to load string
with open ("event_testing.txt", "r") as fp:
event = json.loads(fp.read())
key = json.loads(event['Records'][0]['body'])['Message']
print(key)
'ChiliChallenge.mp4'
Say your message is phrase, I rebuild your code like: phrase_2 = phrase["Records"] print(phrase_2[0]["body"])
Then it works clearly. Because beginning of the Records, it looks like an array so you need to organized it.
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