Question

我正在尝试编写一个可以监控网络流量的代码，有没有办法编写可以监控进出流量（带宽）的代码，并能够在python中看到实时带宽使用情况？

Answer 1

假设你使用Linux：

阅读/sys/class/net/{INTERFACE_NAME}/statistics/tx_bytes＆amp; /sys/class/net/{INTERFACE_NAME}/statistics/rx_bytes获得被发送的＆amp;收到的字节。然后你可以计算一个时间步和瞧之间的差异：你有数据速率。有关tx / rx文件的说明，请参阅kernel documentation。

编辑：快速＆amp; 脏实现只是为了表明这个想法：

import time

def transmissionrate(dev, direction, timestep):
    """Return the transmisson rate of a interface under linux
    dev: devicename
    direction: rx (received) or tx (sended)
    timestep: time to measure in seconds
    """
    path = "/sys/class/net/{}/statistics/{}_bytes".format(dev, direction)
    f = open(path, "r")
    bytes_before = int(f.read())
    f.close()
    time.sleep(timestep)
    f = open(path, "r")
    bytes_after = int(f.read())
    f.close()
    return (bytes_after-bytes_before)/timestep

devname = "wlo1"
timestep = 2 # Seconds
print(transmissionrate(devname, "rx", timestep))

python网络流量监视器

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