code: def get_ip4():
      
      addresses = []
  
      shell_cmd = "ifconfig | awk '/inet addr/{print substr($2,6)}'"
      proc = subprocess.Popen([shell_cmd], stdout=subprocess.PIPE, shell=True)
      (out, err) = proc.communicate()
      ip_addresses = out.split('\n')
      for addr in ip_addresses:
          if re.match(r'\d{1,4}\.\d{1,4}\.\d{1,4}\.\d{1,4}', addr):
               addresses.append(addr)
      return addresses
docs: return all ip v4 address of current computer
      :return: