Multiple inputs and lines loop to write to file - python - python-3.x

Question

Currently I'm pasting multiple lines of names which loops through each line and writes into a file. This prompts me to paste values in which works.
However I would like to have another prompt for other values like IPs etc going through the same loop.
Probably something very simple but any help would be appreciated.
Thanks in advance.
subnet = input(('Paste the subnet mask: '))
quit = ''
for line in iter(input, quit):
with open('my_file.yml', 'a') as data_file:
data_file.write(" - host: " + line + "\n ip: " + ips + "\n subnet:
" + subnet)

Answer 1

You can do what you want without iter by using an infinite while that only breaks out when no input is entered. I could have also checked for no input with if not host, because empty strings return False (See: Truth Value Testing).
The file is only opened once. There no need to repeatedly open it each iteration.
I have used an f-string with the call to write(), but you can still use normal strings like you did.
subnet = input('Paste the subnet mask: ')
with open('my_file.yml', 'a') as data_file:
while True:
host = input('Enter host: ')
if host == '':
break
ips = input('Enter IPs: ')
if ips == '':
break
data_file.write(f' - host: {host}\n ip: {ips}\n subnet: {subnet}\n')
Contents of my_file.yml:
- host: localhost
ip: 192.168.0.5
subnet: 255.255.255.0
- host: anotherhost
ip: 192.168.1.1
subnet: 255.255.255.0