import os
from unstructured import UnstructuredClient

client = UnstructuredClient(
    username=os.environ.get("UNSTRUCTURED_USERNAME"),  # This is the default and can be omitted
    password=os.environ.get("UNSTRUCTURED_PASSWORD"),  # This is the default and can be omitted
)
data_slice = client.data_slice.create(
    data_connector_name="data_connector_name",
    dataslice_name="dataslice_name",
)
print(data_slice.dataslice_id)

{
  "dataslice_id": "<string>"
}