Answer by Barb for How to get IP address using nslookup and python on Windows

You can probably save yourself some time using nmap

pip install python-nmap

Then your python script is simply:

import nmap

scan = nmap.Portscanner()

scan.scan('127.0.0.1', '21-443') # Returns scan on ports from 21-433 

If you are scanning something you want to be careful with consider using proxychains which is a tor based service using SOCKS5. You can use variations such as -O -I to identify the operating systems the IP address is using and some information as to which sockets are open or closed.

There are a lot of helpful methods such as:

>>> scan.scaninfo()
{'tcp': {'services': '22-443', 'method': 'connect'}}

>>> scan.all_hosts()
['127.0.0.1']

>>> scan['127.0.0.1'].hostname()
'localhost'

>>> scan['127.0.0.1'].state()
'up'

>>> scan['127.0.0.1'].all_protocols()
['tcp']

>>> scan['127.0.0.1']['tcp'].keys()
[80, 25, 443, 22, 111]

>>> scan['127.0.0.1'].has_tcp(22)
True

>>> scan['127.0.0.1'].has_tcp(23)
False

>>> scan['127.0.0.1']['tcp'][22]
{'state': 'open', 'reason': 'syn-ack', 'name': 'ssh'}

>>> scan['127.0.0.1'].tcp(22)
{'state': 'open', 'reason': 'syn-ack', 'name': 'ssh'}