Imports github.com/aws/aws-sdk-go/aws/session github.com/aws/aws-sdk-go/service/dynamodb/dynamodbattribute github.com/aws/aws-sdk-go/service/dynamodb github.com/aws/aws-sdk-go/aws github.com/aws/aws-sdk-go/aws/awserr github.com/aws/aws-sdk-go/service/dynamodb/expression Standard library imports encoding/json fmt io/ioutil os strconv