Bash Script to check if IP is Public (using Python3 inline)

check_IP_is_public.sh

#!/bin/bash

IP="1.1.1.1"

ip4="$(python3 -c "from ipaddress import IPv4Address; from sys import argv; ip=argv[1]; print(ip) if IPv4Address(ip).is_global else print('1')" "$IP" 2>/dev/null || echo '0')"

if [[ "$ip4" == '0' ]]
then
  ip6="$(python3 -c "from ipaddress import IPv6Address; from sys import argv; ip=argv[1]; print(ip) if IPv6Address(ip).is_global else print('1')" "$IP" 2>/dev/null || echo '0')"

  if [[ "$ip6" == '0' ]]
  then
    echo "${IP} is no valid IP"
  elif [[ "$ip6" == '1' ]]
  then
    echo "${IP} is private IPv6"
  else
    echo "${IP} is public IPv6"
  fi

elif [[ "$ip4" == '1' ]]
then
  echo "${IP} is private IPv4"

else
  echo "${IP} is public IPv4"
fi