The list can be ip address, ip address range, ip subnet, firewall objects or hostname.
- If item is resolvable, resolve it and collect the ip address.
- If item is unresolvable, will collect it as it is.
The list of items must be separated by commas else it will not work.
import socket def host_processing(host): # Initialize to nothing, if hostname is not resolvable answer will at least contain a null string. answer = "" try: answer = socket.gethostbyname(host) except Exception: # If not resolvable, dun care. pass # if answer is not null string, or host is an ip address # gethostbyname will return the same ip address you put in. if answer: return answer else: # if there is no answer, or if host is a subnet or range return host if __name__ == '__main__': processed_data =  with open('host.txt', 'r') as file: datas = file.read().split(',') for data in datas: processed_data.append(host_processing(data)) print(processed_data)