import boto3
from botocore.exceptions import ClientError

def get_bucket_location_of_s3(bucket_name):
    session = boto3.session.Session()
    s3_client = session.client('s3')
    try:
        result = s3_client.get_bucket_location(Bucket=bucket_name,)
    except ClientError as e:
        raise Exception( "boto3 client error in get_bucket_location_of_s3: " + e.__str__())
    except Exception as e:
        raise Exception( "Unexpected error in get_bucket_location_of_s3 function: " + e.__str__())
    return result

print(get_bucket_location_of_s3("Bucket_1"))

{
  'LocationConstraint': 'us-west-2'|'us-west-1'|'us-east-2'|'us-east1',
  'ResponseMetadata': {
     '...': '...',
  },
}