控制子进程命令的环境(controlling environment for subprocess command)

控制子进程命令的环境(controlling environment for subprocess command)

我正在尝试使用特定的绝对路径启动脚本

from subprocess import check_output

如果我运行：

# myscript.py check_command=['pwd'] ret=check_output(check_command,shell=True) print(ret) path_set_command=['cd MYABSPATH'] ret=check_output(path_set_command,shell=True) ret=check_output(check_command,shell=True) print(ret)

它打印两次myscript.py所在的文件夹。 因此，我明白每次调用check_output重新创建shell中的环境变量。

如何使用check_ouput设置命令的路径？ 我试图让我的命令为

ret=check_output(['cd MYABSPATH; ./otherscript.py'] ,shell=True)

但是，如果我将参数传递给我的otherscript.py （将它们作为额外项目附加到包含该命令的列表中），则它们无法正确转发。

那么如何用foo bar参数在MYABSPATH运行MYABSPATH ？

I am trying to start a script from a specific absolute path using

from subprocess import check_output

If I run:

# myscript.py check_command=['pwd'] ret=check_output(check_command,shell=True) print(ret) path_set_command=['cd MYABSPATH'] ret=check_output(path_set_command,shell=True) ret=check_output(check_command,shell=True) print(ret)

it prints two times the folder where myscript.py is located. Hence, I understand that the environment variables in the shell are recreated each call to check_output.

How to set the path of a command with check_ouput? I have tried to have my command as

ret=check_output(['cd MYABSPATH; ./otherscript.py'] ,shell=True)

however, if I pass arguments to my otherscript.py (appending them as extra item to the list containing the command) they are not correctly forwarded.

So how do I run otherscript.py in MYABSPATH with foo bar arguments?

最满意答案

你可以使用cwd：

foo = check_output("pwd", cwd="/MYABSPATH", shell=True)

You could use cwd:

foo = check_output("pwd", cwd="/MYABSPATH", shell=True)