I have learned that boto3 offers two levels of abstraction: a low-level API called client that is a thin wrapper around the AWS HTTP API, and a high-level client called resource that offers real Python objects. My question is, where is the API documentation for the resource API?

I found this:

https://boto3.readthedocs.io/en/stable/reference/services/ec2.html#client

But that describes the client API, and there's not a 1-to-1 mapping to the resource API. For example, enumerating instances is called describe_instances() on the client object, and it is called instances.all() on the resource object.

Next I found this:

http://boto3.readthedocs.io/en/stable/reference/core/resources.html?highlight=resource

This describes a set of base classes and factory methods, but it doesn't describe the API for a specific service like EC2.

At runtime, I printed out an object of interest and found that it is a boto3.resources.factory.ec2.ServiceResource, but searching the boto3 documentation doesn't show me any human-readable documentation for this resource.

Is there an API document that explains what all of the different Python classes are, and what properties/methods they have? I can print this out at runtime, e.g. print(dir(ec2)) but this is a pretty tedious way to discover the API.