主机月流量10g

import psutil
from datetime import datetime

def get_monthly_usage():
    net_io = psutil.net_io_counters(pernic=True)
    current_usage = {iface: info.bytes_sent + info.bytes_recv for iface, info in net_io.items()}
    
    # 假设我们在月初运行此脚本并记录初始值
    if not hasattr(get_monthly_usage, "initial_usage"):
        get_monthly_usage.initial_usage = current_usage
        return 0
    
    total_usage = sum(current_usage[iface] - get_monthly_usage.initial_usage[iface] for iface in current_usage)
    get_monthly_usage.initial_usage = current_usage  # 更新初始值以备下次使用
    
    return total_usage

# 使用示例
monthly_usage_gb = get_monthly_usage() / (1024 ** 3)  # 转换为吉字节
print(f"本月已使用流量: {monthly_usage_gb:.2f} GB")