I am running openssl command to create a self signed certificate inside Python script.
Facing Unexpected "(" syntax error.
import os
os.system('openssl req -x509 -newkey rsa:4096 -sha256 -days 7300 -nodes -keyout istio_gw.key -out istio_gw.crt -subj "/CN=csd.nokia.com/O=Nokia" -extensions san -config <( echo "[req]"; echo"distinguished_name=req";)')
It's a bashism, so you need to prepend it with bash -c:
shell_command = 'openssl req -x509 -newkey rsa:4096 -sha256 -days 7300 -nodes -keyout istio_gw.key -out istio_gw.crt -subj "/CN=csd.nokia.com/O=Nokia" -extensions san -config <( echo "[req]"; echo"distinguished_name=req";)'
os.system("bash -c '{}'".format(shell_command))
But more importantly, you should be using subprocess instead of os.system
To use subprocess, you should be able to use the shell=True argument:
subprocess.check_output(shell_command, shell=True)
With SubProcess :
import subprocess
from subprocess import Popen, PIPE
shell_command = 'openssl req -x509 -newkey rsa:4096 -sha256 -days 7300 -nodes -keyout istio_gw.key -out istio_gw.crt -subj "/CN=csd.nokia.com/O=Nokia" -extensions san -config <( echo "[req]"; echo "distinguished_name=req"; echo "[san]"; echo "subjectAltName=DNS:*.nokia.com")'
p = Popen("bash -c '{}'".format(shell_command), shell=True, bufsize=-1, stderr=PIPE, stdout=PIPE)
out,err = p.communicate()
print(out)
print(err)
bash -c and shell=True, see my edited answer