grep: Add template with expected parameter
grep: Add template with expected parameter

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