如何使用另一个交付中的子进程运行python脚本

Question

I need to run another python script which generating data in my script I current working with. I use subprocess to run it:

cmd = 'python /home/usr/script.py arg1 arg2 arg3'
subprocess.Popen(cmd, shell=True)

But have a problem. Previous script generate few directories in 'current directory', it means in directory it was run in. And I can't modify previous script, cause it's not mine. How to set current directory to dir where I want to get data? \\n
Another small problem is that when I run subprocess.Popen() my script doesn't end. Should I run it in another way?

Answer 1

the best way is to use subprocess.call instead (waits & terminates, Popen without the relevant wait() may create a zombie process) and use the cwd= parameter to specify current dir for the subprocess:

cmd = ['python','/home/usr/script.py','arg1','arg2','arg3']
return_code = subprocess.call(cmd, cwd="/some/dir")

(also pass the command as a list, and drop shell=True , you don't need it here)