Delete multiple lines from txt file

[Lky]

def remove_lines_list (file):
    ip_list = open(file).readlines()
    return [address.rstrip('\n') for address in ip_list]

I use this function to take a list of IP addresses and remove all the trailing \n so i get a clean list with no extra spaces or lines.. i dont know if this is helpful but i use this when getting a txt file in put of IP addresses i need to loop through.

It can't work as I need to delete the whole question not only one line.