When Lambda runs your function, it passes a context object to the handler. This object provides methods and properties that provide information about the invocation, function, and execution environment.
Context methods
get_remaining_time_in_millis– Returns the number of milliseconds left before the execution times out.
Context properties
function_name– The name of the Lambda function.function_version– The version of the function.invoked_function_arn– The Amazon Resource Name (ARN) that's used to invoke the function. Indicates if the invoker specified a version number or alias.memory_limit_in_mb– The amount of memory that's allocated for the function.aws_request_id– The identifier of the invocation request.log_group_name– The log group for the function.log_stream_name– The log stream for the function instance.deadline_ms– The date that the execution times out, in Unix time milliseconds.identity– (mobile apps) Information about the Amazon Cognito identity that authorized the request.client_context– (mobile apps) Client context that's provided to Lambda by the client application.