executing shell commands from python script
import subprocess
subprocess.run(["bash", "testShell.sh"])
#we don't have to give full path to the shell script. It always execute from the current directory
#As a rule of thumb, you need to separate the arguments based on space,
#for example ls -alh would be ["ls", "-alh"], while ls -a -l -h,
#would be ["ls", "-a", -"l", "-h"]. As another example,
#echo hello world would be ["echo", "hello", "world"],
#whereas echo "hello world" or echo hello world would
#be ["echo", "hello world"].
#Another example.
list_files = subprocess.run(["ls", "-l"])
print("The exit code was: %d" % list_files.returncode)