1. azure-servicebus script: [sample_code_servicebus.py](https://github.com/Azure/azure-sdk-for-python/blob/master/sdk/servicebus/azure-servicebus/samples/sync_samples/sample_code_servicebus.py#L35) [sample_code_servicebus_async.py](https://github.com/Azure/azure-sdk-for-python/blob/master/sdk/servicebus/azure-servicebus/samples/async_samples/sample_code_servicebus_async.py#L38)  Suggestion: `fully_qualified_namespace = os.environ['SERVICE_BUS_NAMESPACE']`