capo-ec2 0.5.0

Python SDK for Amazon EC2.

Getting Started

Installation

pip install capo-ec2

Usage

from capo_ec2 import AsyncEC2Client


async def main():
    async with AsyncEC2Client() as s3:
        # Example: call the accept_address_transfer operation
        response = await s3.accept_address_transfer()
        print(response["address_transfer"])

Pagination

Some operations in this SDK support pagination. If the operation supports pagination it will have an iter_ prefixed method that returns an async iterator.

from capo_ec2 import AsyncEC2Client


async def main():
    async with AsyncEC2Client() as s3:
        # Example: paginate over describe_addresses_attribute
        async for item in s3.iter_describe_addresses_attribute():
            print(item)

Waiters

Waiters poll an operation until a resource reaches a desired state. If the operation supports waiters it will have a wait_until_ prefixed method.

from capo_ec2 import AsyncEC2Client


async def main():
    async with AsyncEC2Client() as s3:
        # Example: wait for vpc_peering_connection_exists
        await s3.wait_until_vpc_peering_connection_exists(max_wait_time=300)

Retrying

The SDK retries failed operations automatically. Retry behaviour follows the Smithy specification: errors are retried based on their is_retryable and is_throttling_error attributes. Throttling errors use a longer base delay. Network-level failures (connection errors and timeouts) are also retried. Non-retryable errors, such as client errors without the @retryable trait, are raised immediately without further attempts.

The number of attempts defaults to 3 and can be changed at the client level via retry_max_attempts, or per call via config_overrides.

from capo_ec2 import AsyncEC2Client


async def main():
    async with AsyncEC2Client() as s3:
        # Default: 3 attempts for every operation
        response = await s3.accept_address_transfer()

        # Override per operation
        response = await s3.accept_address_transfer(config_overrides={"retry_max_attempts": 5})

        # Disable retries for this call
        response = await s3.accept_address_transfer(config_overrides={"retry_max_attempts": 1})