widgets.py 文件源码

def get_network(self):
        usage = 0

        current_network = psutil.net_io_counters()[0]

        if self._previous_network == 0:
            # Check, wait a second, then check again to get a base value.
            self._previous_network = current_network
            time.sleep(2)
            current_network = psutil.net_io_counters()[0]

        time_since = time.time() - self._last_check
        usage = (current_network - self._previous_network)

        self._previous_network = current_network
        self._last_check = time.time()

        return usage