Python subprocess/Popen with a modified environment

Question

I believe that running an external command with a slightly modified environment is a very common case. That's how I tend to do it:

import subprocess, os

my_env = os.environ

my_env["PATH"] = "/usr/sbin:/sbin:" + my_env["PATH"] subprocess.Popen(my_command, env=my_env)

I've got a gut feeling that there's a better way; does it look alright?

Answer 1

If you do not want to modify the os.environ for the current process then the os.environ.copy() is better to use below is the code for the same:-

import subprocess, os

my_env = os.environ.copy()

my_env["PATH"] = "/usr/sbin:/sbin:" + my_env["PATH"] subprocess.Popen(my_command, env=my_env)

To know more about this you can have a look at the following video:-