binary: Update placeholder parameter to be more specific per #545
binary: Update placeholder parameter to be more specific per #545


smalley/python,exercism/xpython,behrtam/xpython,N-Parsons/exercism-python,exercism/python,N-Parsons/exercism-python,smalley/python,mweb/python,jmluy/xpython,pheanex/xpython,exercism/python,jmluy/xpython,mweb/python,exercism/xpython,pheanex/xpython,behrtam/xpython