Python:如何读取(而不是运行) shell脚本，并在此过程中插入参数

import subprocess

def read_shell_script(script_path, args):
    with open(script_path, 'r') as file:
        script_content = file.read()

    # 在脚本内容中插入参数
    modified_script = script_content.replace('$1', args)

    # 执行修改后的脚本
    process = subprocess.Popen(['bash'], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
    output, error = process.communicate(input=modified_script.encode())

    # 输出执行结果
    if process.returncode == 0:
        print('执行成功：')
        print(output.decode())
    else:
        print('执行失败：')
        print(error.decode())

# 调用示例
script_path = 'path/to/your/script.sh'
args = 'your_arguments'
read_shell_script(script_path, args)