--- a/eric6/UI/PythonDisViewer.py Wed Sep 23 19:17:00 2020 +0200 +++ b/eric6/UI/PythonDisViewer.py Thu Sep 24 19:13:41 2020 +0200 @@ -416,12 +416,11 @@ @return dictionary containing the code info data @rtype dict """ - return { + codeInfoDict = { "name": co.co_name, "filename": co.co_filename, "firstlineno": co.co_firstlineno, "argcount": co.co_argcount, - "posonlyargcount": co.co_posonlyargcount, "kwonlyargcount": co.co_kwonlyargcount, "nlocals": co.co_nlocals, "stacksize": co.co_stacksize, @@ -432,6 +431,11 @@ "freevars": [str(var) for var in co.co_freevars], "cellvars": [str(var) for var in co.co_cellvars], } + try: + codeInfoDict["posonlyargcount"] = co.co_posonlyargcount + except AttributeError: + # does not exist prior to 3.8.0 + codeInfoDict["posonlyargcount"] = 0 def __loadDIS(self): """