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Don't require upstream patches for boto3#3
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The AWS Python SDK, [boto3], has [resource] objects that provide high-level interfaces to AWS services. The [DynamoDB resource] greatly simplifies marshalling and unmarshalling data. We rely on the resource method for [TransactWriteItems] among others that are absent from boto3. We opened PR boto/boto3#4010 to add that method. The resource methods are synthesized at runtime from a data file. Fortunately, boto3 has a [Loader] mechanism that allows the user to add extra data files, and the [loader search path] is configurable. In order to not depend upon our upstream PR for boto3, we distribute the extra data files and fix up the loader search path by putting it in a [.pth file] which Python executes automatically during startup. The data and .pth file are now part of an external package, [boto3-missing]. [boto3]: https://github.com/boto/boto3 [resource]: https://boto3.amazonaws.com/v1/documentation/api/latest/guide/resources.html [DynamoDB resource]: https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/dynamodb.html#resources [TransactWriteItems]: https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_TransactWriteItems.html [Loader]: https://botocore.amazonaws.com/v1/documentation/api/latest/reference/loaders.html [loader search path]: https://botocore.amazonaws.com/v1/documentation/api/latest/reference/loaders.html#the-search-path [.pth file]: https://docs.python.org/3/library/site.html [boto3-missing]: https://github.com/nasa-gcn/boto3-missing
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The AWS Python SDK, boto3, has resource objects that provide high-level interfaces to AWS services. The DynamoDB resource greatly simplifies marshalling and unmarshalling data. We rely on the resource method for TransactWriteItems among others that are absent from boto3. We opened PR
boto/boto3#4010 to add that method.
The resource methods are synthesized at runtime from a data file. Fortunately, boto3 has a Loader mechanism that allows the user to add extra data files, and the loader search path is configurable.
In order to not depend upon our upstream PR for boto3, we distribute the extra data files and fix up the loader search path by putting it in a .pth file which Python executes automatically during startup. The data and .pth file are now part of an external package, boto3-missing.