Get WSL IP

get_wsl_ip.py

#!/usr/bin/env python3
# Modified from https://superuser.com/questions/1586386/how-to-find-wsl2-machines-ip-address-from-windows#1749524

import re
import subprocess
from itertools import repeat

class Regex_ip:
    def regex_ip_with_assert(self):
        return f'{self.regex_ip_assert()}{self.regex_ip()}'
    
    def regex_ip_assert(self):
        return '(?<=inet\s)'
    
    def regex_ip(self) -> str:
        field = self.regex_field()
        return '.'.join(repeat(field, 4))
        #return f'{field}.{field}.{field}.{field}'
    
    def regex_field(self) -> str:
        # BETTER from 0 to 255
        # BETTER with assertion ?
        return '\d{1,3}'

output = subprocess.check_output('ip addr show eth0', shell=True)
print(re.search(Regex_ip().regex_ip_with_assert(), output.decode()).group())