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So it's normally the last part of the arn. So something with an arn like "arn:aws:ec2:us-west-2:616138583583:instance/i-092bcc5cbb92278c1" has an id of "i-092bcc5cbb92278c1".

Oh ok. Thanks. This is the only way the get the ID?

I mean, I have to know the ID? I cannot get a resource just from its name?

Currently you need the ID, we don't have a general search by other fields system yet.

<@U03RQ22ERA4> There is a difference between the `get` function on any Resource class (which needs the id as <@U02J3T6A8LB> described) and similar functions you see on the package level. In your case, you are more interested in `aws.ec2.getInstance(…)` where you can pass a filter description.
<https://www.pulumi.com/registry/packages/aws/api-docs/ec2/getinstance/>

<@UK4HNFLCB> Although I need to get a DataSource and a DynamoDB table, according to the doc there is no `.getInstance(...)` for AWS DataSources and DynamoDB tables Pulumi types. Right?

The word `instance` in `getInstance` refers to an EC2 instance. This isn’t a function that returns you an instance of *any* resource type. E.g. for DynamoDB tables, you have a similar function in the `aws.dynamodb` module:
<https://www.pulumi.com/registry/packages/aws/api-docs/dynamodb/gettable/>
There seems to be more than one AWS product which has a type `DataSource`. Which product are you using in this case?

<@UK4HNFLCB> Thanks. Great for DynamoDB, missed that!
For `DataSource` sorry I mean an AppSync DataSource, if that makes things more clear.

<@UK4HNFLCB> For Appsync DataSource I see a `.get(...)` function but it seems it requires an ID: <https://www.pulumi.com/registry/packages/aws/api-docs/appsync/datasource/>

I couldn’t find any ARN or ID for AppSync DataSource in AWS.

In that case I might just recreate another DataSource and associate it with the same existing DynamoDB table.

I figured it out thanks to the help of <@UK4HNFLCB>.

If that can be of any help to someone else, this is how you get an existing AWS DynamoDB table from its name (in Python).

You need to do it in two steps. The documentation is not clear on that and on what is an ID (blink to Pulumi’s team, would be great to improve the doc on that points)

Here you are (I type-hinted the vars for more clarity):
```import pulumi_aws as aws


dynamodb_table_info: aws.dynamodb.get_table.AwaitableGetTableResult = aws.dynamodb.get_table(name="my-name")

dynamodb_table: aws.dynamodb.Table = aws.dynamodb.Table.get(resource_name=dynamodb_table_info.name, id=dynamodb_table_info.id)```