Make hamming exercise compatible
Make hamming exercise compatible

de2Zotjes/xpython,behrtam/xpython,orozcoadrian/xpython,exercism/python,outkaj/xpython,jmluy/xpython,outkaj/xpython,de2Zotjes/xpython,pombredanne/xpython,pombredanne/xpython,mweb/python,wobh/xpython,smalley/python,exercism/python,Peque/xpython,smalley/python,pheanex/xpython,oalbe/xpython,oalbe/xpython,rootulp/xpython,wobh/xpython,N-Parsons/exercism-python,exercism/xpython,jmluy/xpython,ZacharyRSmith/xpython,ZacharyRSmith/xpython,mweb/python,exercism/xpython,pheanex/xpython,N-Parsons/exercism-python,Peque/xpython,behrtam/xpython,rootulp/xpython,orozcoadrian/xpython