def __str__(self, prefix="", printElemNumber=0):
    res=""
    if self.has_op_: res+=prefix+(self.DebugFormatInt32(self.op_) % "op: %s\n")
    if self.has_num_ops_: res+=prefix+("num_ops: %s\n" % self.DebugFormatInt32(self.num_ops_))
    return res
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/ext/appstats/datamodel_pb.py/BilledOpProto.__str__/swapped operands of `%`