In Python, I start a new process via
Popen(), which works fine. Now in the child process I want to find the parent's process ID.
What is the best way to achieve this, maybe I can pass the PID via the
Popen constructor, but how? Or is there a better way to do so?
PS: If possible I would prefere a solution using only standard libraries.
You can use
Return the parent’s process id.
Note: this works only on Unix, not on Windows. On Windows you can use
os.getpid() in the parent process and pass the pid as argument to the process you start with
ppid() is a member method, not variable, of Process, so the above needs to be changed to include the parenthesis.
Source: psutil documentation
import psutil, os psutil.Process(os.getpid()).ppid()