{"library":"mypy-boto3-elb","title":"mypy-boto3-elb Type Stubs for AWS Elastic Load Balancing","description":"mypy-boto3-elb provides type annotations for the `boto3` Elastic Load Balancing (ELB) service. It allows static type checkers like MyPy and Pyright to validate `boto3` calls, improving code quality and developer experience. The library version 1.42.3 matches the corresponding `boto3` version, and it's actively maintained with frequent updates reflecting changes in AWS services and `boto3` itself.","language":"python","status":"active","last_verified":"Thu May 14","install":{"commands":["pip install mypy-boto3-elb boto3 mypy","pip install 'boto3-stubs[elb]' boto3 mypy"],"cli":null},"imports":["from mypy_boto3_elb.client import ElasticLoadBalancingClient","from mypy_boto3_elb.type_defs import LoadBalancerDescriptionTypeDef","from mypy_boto3_elb.paginator import DescribeLoadBalancersPaginator"],"auth":{"required":false,"env_vars":[]},"quickstart":{"code":"import boto3\nfrom typing import TYPE_CHECKING\nimport os\n\n# Ensure boto3 is configured, e.g., via environment variables or AWS CLI config\n# For quickstart, using dummy values if not set in environment\nos.environ.setdefault('AWS_ACCESS_KEY_ID', 'YOUR_ACCESS_KEY')\nos.environ.setdefault('AWS_SECRET_ACCESS_KEY', 'YOUR_SECRET_KEY')\nos.environ.setdefault('AWS_DEFAULT_REGION', 'us-east-1')\n\nif TYPE_CHECKING:\n    from mypy_boto3_elb.client import ElasticLoadBalancingClient\n    from mypy_boto3_elb.type_defs import LoadBalancerDescriptionTypeDef\n\ndef list_classic_load_balancers() -> None:\n    \"\"\"Lists classic load balancers and their DNS names with type hints.\"\"\"\n    # boto3.client automatically infers the return type if mypy-boto3-elb is installed\n    client: ElasticLoadBalancingClient = boto3.client(\"elb\")\n    \n    try:\n        response = client.describe_load_balancers()\n        load_balancers: list[LoadBalancerDescriptionTypeDef] = response[\"LoadBalancerDescriptions\"]\n        \n        if not load_balancers:\n            print(\"No classic load balancers found.\")\n            return\n\n        print(\"Classic Load Balancers:\")\n        for lb in load_balancers:\n            print(f\"  Name: {lb['LoadBalancerName']}\")\n            print(f\"  DNS Name: {lb['DNSName']}\")\n            print(f\"  Scheme: {lb.get('Scheme', 'internet-facing')}\") # 'Scheme' might be optional\n    except Exception as e:\n        print(f\"Error describing load balancers: {e}\")\n\nif __name__ == \"__main__\":\n    list_classic_load_balancers()\n","lang":"python","description":"This quickstart demonstrates how to initialize an Elastic Load Balancing (ELB) client with type hints and use it to list classic load balancers. The `TYPE_CHECKING` block ensures that type-related imports are only active during static analysis, preventing runtime overhead. 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