def __str__(self, prefix="", printElemNumber=0):
    res=""
    cnt=0
    for e in self.module_:
      elm=""
      if printElemNumber: elm="(%d)" % cnt
      res+=prefix+((elm, self.DebugFormatString(e)) % "module%s: %s\n")
      cnt+=1
    return res
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/api/modules/modules_service_pb.py/GetModulesResponse.__str__/swapped operands of `%`