Execute a shell function from python subprocess

Question

I'm trying to kill a specific process with a command which works well in the shell but not from python subprocess

import subprocess
subprocess.call(["kill", "$(ps | grep process | awk '{ print 1ドル}' | head -n1)"], shell=False)

A work around would be to put this command into a shell script and run the shell script. Is it possible from python subprocess directly ?

• mousetail: Use shell=True?
• KamilCuk: kill $(ps | grep process | awk '{ print 1ドル}' | head -n1)" use pkill process?
• HoneyPoop: what do you mean by shell script?
• hotips: @KamilCuk I cannot use pkill as not available in the yocto distribution I have
• hotips: @mousetrail I tried with shell True and it was not working better

Answer 1

import subprocess
subprocess.Popen("kill $(ps | grep ncat | awk '{print 1ドル}' | head -n1)", shell=True)

In your example, you don't create a subprocess from bash, but at the same time you use $(...) which is a bash instruction. To be more precise, you create a kill process and pass it argument $(...) which is not precomputed.

The above example creates a bash process, and then tells it to interpret kill $(...). Bash converts $(...) to a value, and then it runs kill VALUE.

• KamilCuk: Yes, only one "but", but /bin/sh is not necessarily bash. It may be other Bourne shell.