I was playing with the SFTP downloads workflow and there are 2 places in the workflow where you need to edit things (hostname, path etc.) It would be nice if a workflow could contain arguments that could be retrieved by the python files in the workflow. It could be set in the information page for the workflow.
Workflows can create, set and read parameters, called variables. You can access these in python. Look in
editorial help > scripting with python > workflowand the workflow actions