Tried to create a project with the name of an existing project. Command just hangs.
This is due to args.parentId = None being passed to the client REST call for store.
https://github.com/Sage-Bionetworks/synapsePythonClient/blob/master/synapseclient/__main__.py#L299-L301
Validated that on the 1.9.4-develop branch that the issue no longer exists