Parse ARNs using Python
Sometimes, you want to parse an Amazon Resource Name (ARN) into its components to get some useful information from the ARN (e.g. AWS region, account ID, etc).
You can find documentation on ARNs and their components here: https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html
pip install arnparse
from arnparse import arnparse
arn = arnparse('arn:aws:s3:::my_corporate_bucket/exampleobject.png')
assert arn.partition == 'aws'
assert arn.service == 's3'
assert arn.region is None
assert arn.account_id is None
assert arn.resource_type is None
assert arn.resource == 'my_corporate_bucket/exampleobject.png'from arnparse import arnparse
arn = arnparse('arn:aws:ec2:us-east-1:123456789012:vpc/vpc-fd580e98')
assert arn.partition == 'aws'
assert arn.service == 'ec2'
assert arn.region == 'us-east-1'
assert arn.account_id == '123456789012'
assert arn.resource_type == 'vpc'
assert arn.resource == 'vpc-fd580e98'from arnparse import arnparse
arn = arnparse('arn:aws:cloudwatch:us-east-1:123456789012:alarm:MyAlarmName')
assert arn.partition == 'aws'
assert arn.service == 'cloudwatch'
assert arn.region == 'us-east-1'
assert arn.account_id == '123456789012'
assert arn.resource_type == 'alarm'
assert arn.resource == 'MyAlarmName'from arnparse import arnparse
arn = arnparse('arn:aws:sns:*:123456789012:my_corporate_topic')
assert arn.partition == 'aws'
assert arn.service == 'sns'
assert arn.region == '*'
assert arn.account_id == '123456789012'
assert arn.resource_type is None
assert arn.resource == 'my_corporate_topic'from arnparse import arnparse
arn = arnparse('arn:aws:apigateway:us-east-1::a123456789012bc3de45678901f23a45:/test/mydemoresource/*')
assert arn.partition == 'aws'
assert arn.service == 'apigateway'
assert arn.region == 'us-east-1'
assert arn.account_id is None
assert arn.resource_type is None
assert arn.resource == 'a123456789012bc3de45678901f23a45:/test/mydemoresource/*'
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