#!/usr/bin/env python3
+"""A helper class for generating thread safe monotonically increasing
+id numbers."""
+
import itertools
import logging
if name not in generators:
generators[name] = itertools.count(start, 1)
x = next(generators[name])
- logger.debug(f"Generated next id {x}")
+ logger.debug("Generated next id %d", x)
return x