mypy-boto3-amplifybackend Type Annotations

Warnings

• breaking Python 3.8 support was removed for all `mypy-boto3` packages starting with `mypy-boto3-builder` version 8.12.0 (which generated `mypy-boto3-amplifybackend` 1.42.3).
  Fix: Upgrade your Python environment to 3.9 or higher, or downgrade to an older `mypy-boto3-amplifybackend` version (e.g., <1.42.0) if you must use Python 3.8.
• breaking TypeDef naming conventions were changed in `mypy-boto3-builder` 8.9.0. This can break code that explicitly imports and uses specific TypeDef names if they were affected by the shortening of 'RequestRequestTypeDef' to 'RequestTypeDef' or the reordering of 'Extra' suffixes.
  Fix: Review your code for direct imports of TypeDefs and adjust names according to the new conventions, referring to the latest generated `type_defs.pyi` for the correct names.
• gotcha For full type-checking of dynamic `boto3.client()` and `boto3.resource()` calls (e.g., `boto3.client("amplifybackend")`), `mypy` must be configured with the `boto3.mypy_boto3_plugin`.
  Fix: Add `plugins = boto3.mypy_boto3_plugin` to your `mypy` configuration file (e.g., `pyproject.toml` or `.mypy.ini`). Without this plugin, `mypy` might infer `Any` for the client object, reducing type-safety.
• gotcha `mypy-boto3` stub versions are designed to synchronize with `boto3` releases. Using a `mypy-boto3-amplifybackend` version that significantly differs from your installed `boto3` can lead to incorrect or missing type hints.
  Fix: Always try to keep your `mypy-boto3-amplifybackend` package version in sync with your `boto3` installation. For example, if `boto3` is `1.28.x`, use `mypy-boto3-amplifybackend~=1.28.x`.

Install

• pip install mypy-boto3-amplifybackend Install library

Imports

• AmplifyBackendClient

  from mypy_boto3_amplifybackend import AmplifyBackendClient

• CreateBackendRequestRequestTypeDef

  from mypy_boto3_amplifybackend.type_defs import CreateBackendRequestRequestTypeDef

Quickstart

This quickstart demonstrates how to use `mypy-boto3-amplifybackend` to add type hints to your boto3 AmplifyBackend client calls. It includes defining request payloads using type definitions and ensures type safety for the client object and its methods.

import boto3
from mypy_boto3_amplifybackend import AmplifyBackendClient
from mypy_boto3_amplifybackend.type_defs import CreateBackendRequestRequestTypeDef, ResourceConfigTypeDef, AmplifyBackendTypeDef

def create_amplify_backend(app_id: str, app_name: str, region_name: str = "us-east-1") -> AmplifyBackendTypeDef:
    """
    Demonstrates creating an Amplify Backend using a type-hinted boto3 client.
    Note: A real backend creation requires more specific configurations
    and an existing Amplify application. This is a minimal example for typing.
    """
    
    # Initialize the AmplifyBackend client with type hints
    client: AmplifyBackendClient = boto3.client("amplifybackend", region_name=region_name)

    # Example minimal resource configuration
    resource_config: ResourceConfigTypeDef = {
        "BackendManagerAppId": "amplify", # Often "amplify" for Amplify Console managed backends
        "AmplifyMetaConfig": {} # Typically contains ARN, Region, etc.
    }

    # Prepare the request payload using type definitions
    request_payload: CreateBackendRequestRequestTypeDef = {
        "AppId": app_id,
        "AppName": app_name,
        "ResourceConfig": resource_config,
        "ResourceType": "Amplify", # Or "Auth", "Storage", "API" depending on what you're creating
    }

    try:
        print(f"Attempting to create Amplify Backend for AppId: {app_id}, AppName: {app_name}...")
        response: AmplifyBackendTypeDef = client.create_backend(**request_payload)
        print("Backend creation initiated successfully.")
        print(f"Operation ID: {response.get('OperationId')}")
        print(f"App ID: {response.get('AppId')}")
        return response
    except client.exceptions.NotFoundException:
        print(f"Error: Amplify App with ID '{app_id}' not found.")
    except Exception as e:
        print(f"An unexpected error occurred: {e}")
    return {}

if __name__ == "__main__":
    # Replace with your actual Amplify App ID and a desired app name
    # Ensure AWS credentials are configured (e.g., via ~/.aws/credentials or environment variables)
    # This example won't actually succeed without a valid pre-existing Amplify app ID
    # and potentially more detailed ResourceConfig.
    dummy_app_id = "d123456789abc" # This should be a real Amplify App ID for testing
    dummy_app_name = "MyAmplifyBackendApp"
    
    # To run this code, replace dummy_app_id and dummy_app_name with real values
    # and ensure your AWS environment is configured for boto3.
    # result = create_amplify_backend(dummy_app_id, dummy_app_name)
    # print(result)
    print("Quickstart complete. Modify `dummy_app_id` and `dummy_app_name` to test with real values.")