I believe the name of the argument has changed in 1.4. It should be 's3folderpath'
name : str
The name for the environment.
s3folderpath : str
Path to an S3 folder which can written to using your AWS credentials. Format
should be: 's3://bucket_name/path/'. This path will be used to store log
files and results.
awsaccesskey : str, optional
The AWS Access Key to use to launch the host(s). This parameter must be
set or the AWSACCESSKEY_ID environment variable must be set.
awssecretkey : str, optional
The AWS Secret Key to use to launch the host(s). This parameter must
be set or the AWSSECRETACCESS_KEY environment variable must be set.
num_hosts : int, optional
The number of EC2 host(s) to use for this environment. Default value is 1.
region : str, optional
The AWS region in which to launch your instance. Default is 'us-west-2'.
instancetype : str, optional
The EC2 instance type to launch, default is m3.xlarge. We support all
instance types except: 't2.micro', 't2.small', 't2.medium' and
'm3.medium'. For a list of instancetypes, please refer to