Ah!!! That did it! I switched over to the console, did os.chdir() to get to the correct path and did sys.path.append(os.getcwd()) and full completions are working now. Thank you!!
I'm not sure WHY the folder was not already in sys.path since I have clicked the Run button many times thinking that could be what was needed. But this workaround is perfect at any rate!
[I posted a follow up with what appeared to be a bug but I think I had a typo in my sample code because everything is working just fine now.]