Remove 'invalid escape sequence' DeprecationWarning in py3
Remove 'invalid escape sequence' DeprecationWarning in py3

Change-Id: I1720647aa27abb9880bb591431c0ddddc74c6003

hasteur/g13bot_tools_new,npdoty/pywikibot,wikimedia/pywikibot-core,Darkdadaah/pywikibot-core,npdoty/pywikibot,jayvdb/pywikibot-core,PersianWikipedia/pywikibot-core,happy5214/pywikibot-core,hasteur/g13bot_tools_new,happy5214/pywikibot-core,wikimedia/pywikibot-core,hasteur/g13bot_tools_new,magul/pywikibot-core,Darkdadaah/pywikibot-core,magul/pywikibot-core,jayvdb/pywikibot-core