实时获取shell输出，并将所有输出存储在一个变量中

import subprocess

def get_shell_output(command):
    # 执行shell命令，并将stdout和stderr输出合并
    output = subprocess.check_output(command, shell=True, stderr=subprocess.STDOUT)
    return output.decode('utf-8')

# 调用示例
output = get_shell_output('ls -l')
print(output)

import subprocess

def get_shell_output_realtime(command):
    process = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)

    while True:
        # 逐行读取实时输出
        output = process.stdout.readline().decode('utf-8')
        if output == '' and process.poll() is not None:
            break
        if output:
            print(output.strip())

    return process.poll()

# 调用示例
get_shell_output_realtime('ping www.tencent.com')