def __str__(self):
        s = ["Character devices:"]
        for num, fmt in self._charmap.items():
            s.append("%3d %s" - (num, fmt))
        s.append("\nBlock devices:")
        for num, fmt in self._blockmap.items():
            s.append("%3d %s" % (num, fmt))
        return "\n".join(s)
dataset/ETHPy150Open kdart/pycopia/core/pycopia/OS/Linux/proc/devices.py/Devices.__str__/operator `%` -> `-`