在 Python 中使用 os.system 调用多个命令 [英] Calling multiple commands using os.system in Python

问题描述

我想从我的 python 脚本中调用多个命令.我尝试使用 os.system()，但是，当当前目录更改时，我遇到了问题.

I would like to invoke multiple commands from my python script. I tried using the os.system(), however, I'm running into issues when the current directory is changed.

示例:

os.system("ls -l")
os.system("<some command>") # This will change the present working directory 
os.system("launchMyApp") # Some application invocation I need to do.

现在，第三次调用启动不起作用.

Now, the third call to launch doesn't work.

推荐答案

os.system 是标准 C 函数 system()，因此它的参数可以是any有效的shell 命令，只要它适合为进程的环境和参数列表保留的内存.

os.system is a wrapper for Standard C function system(), and thus its argument can be any valid shell command as long as it fits into the memory reserved for environment and argument lists of a process.

因此，将这些命令用分号或换行符分隔，它们将在同一环境中按顺序执行.

So, separate those commands with semicolons or line breaks, and they will be executed sequentially in the same environment.

os.system(" ls -l; <some command>; launchMyApp")

os.system('''
ls -l
<some command>
launchMyApp
''')

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