#author muhammadali e
import boto3
AWS_ACCESS_KEY = 'access kye'
AWS_SECRET_KEY = 'secret key'
AWS_DYNAMODB_TABLE_REGION   = 'region'
size = 0

dynamodb = boto3.resource('dynamodb',aws_access_key_id=AWS_ACCESS_KEY,
                          aws_secret_access_key=AWS_SECRET_KEY,region_name=AWS_DYNAMODB_TABLE_REGION)
table_iterator = dynamodb.tables.all()
for i in table_iterator:
  size += i.table_size_bytes
  print i.table_name,i.table_size_bytes,size
print 'total size in bytes = ',size