Python 实时读取 iperf3 命令输出并显示

使用 Python 编写程序，实时读取并显示运行 iperf3 -c 1.1.1.1 -i 命令的每一行输出。

方法一：使用 iter(process.stdout.readline, '')

import subprocess
import time

def run_iperf_command():
    command = "iperf3 -c 192.168.124.92 -p11111 -i 1"
    process = subprocess.Popen(command.split(), stdout=subprocess.PIPE, universal_newlines=True)
    for line in iter(process.stdout.readline, ''):
        print(time.time(), line.strip())

run_iperf_command()

方法二：使用 process.communicate() 每秒钟打印当前的行内容

import subprocess
import time

def run_iperf_command():
    command = "iperf3 -c 1.1.1.1 -i 1"
    process = subprocess.Popen(command.split(), stdout=subprocess.PIPE, universal_newlines=True)
    while True:
        output = process.stdout.readline()
        if output == '' and process.poll() is not None:
            break
        if output:
            print(time.time(), output.strip())
        time.sleep(1)

run_iperf_command()