get the fie name from lambda event

lambda.py

def handler(event, context):
    print("Received event: " + str(event))
    
    try:
        # Extract the file name from the event data
        file_name = event['Records'][0]['s3']['object']['key']
        print("File name: " + file_name)
    except (KeyError, IndexError) as e:
        print(f"Error extracting file name: {e}")
        return {
            'statusCode': 400,
            'body': f"Error extracting file name: {e}"
        }
    
    # Add your additional processing logic here
    
    return {
        'statusCode': 200,
        'body': 'Hello from Lambda!'
    }
"""
{
  'Records': [
    {
      'eventVersion': '2.1',
      'eventSource': 'aws:s3',
      'awsRegion': 'ap-south-1',
      'eventTime': '2025-02-22T10:58:12.860Z',
      'eventName': 'ObjectCreated:Put',
      'userIdentity': {
        'principalId': 'A3GO63IW3SK'
      },
      'requestParameters': {
        'sourceIPAddress': '122.161.50.39'
      },
      'responseElements': {
        'x-amz-request-id': 'GND5HND',
        'x-amz-id-2': 'cZ7WN2hw7ks8f1CgpPIgYsHjmwiYTAV0RjjpczHGfkQr0ks38Gpc8USxe4WvokEXIkNOsNi4='
      },
      's3': {
        's3SchemaVersion': '1.0',
        'configurationId': 'tf-s3-lambda-20250222105609036700000001',
        'bucket': {
          'name': 'my-lambda-trigger-bucket-2025',
          'ownerIdentity': {
            'principalId': 'A3GO63CAEIW3SK'
          },
          'arn': 'arn:aws:s3:::my-lambda-trigger-bucket-2025'
        },
        'object': {
          'key': 'address.pdf',
          'size': 14714,
          'eTag': '67f0d0cfa2726b34e7b2',
          'sequencer': '0067BC0B60C37'
        }
      }
    }
  ]
}

"""