Python judges legitimate IP and distinguishes between intranet and extranet addresses

 Import re 
 
 def legit_ip (_ip): 
 Compile_ip = Re.compile (' ^ (25[0-5]|2[0-4]\d|[ 01]?\d\d?) \.) {3} (25[0-5]|2[0-4]\d| [01]?\d\d?] $ ') 
 if Compile_ip.match (_ip): 
 return True 
 Else: 
 return False 
 
 def ip_intr_extr (h        UANGGR): 
 Intr = [10,172,192] 
 Intranet_ips = [] 
 Extranet_ips = [] 
 for I in Huanggr: 
 For II in INTR: 
 _ip = Re.match (R '%s.* '% (ii), I) 
 if _ip: 
 Intranet_ips.ap Pend (_ip.group ()) 
 Extranet_ips = List (set (HUANGGR)-set (intranet_ips)) 
 return intranet_ips,extranet_ips 
 I F __name__ = = ' __main__ ': 
 _legit_ip = [] 
 _input = [' 10.12.16.224 ', ' 10.256.8.56 ', ' 192.168.257.1 ', ' 172.56.2 ' 5.2 ', ' 183.18.46.53 ', ' 86.17.46.12 ', 
 ' 213.49.56.38 '] 
 for _ip in _input: 
 If Legit_ip (_ip ): 
 _legit_ip.append (_IP) 
 Print (IP_INTR_EXTR (_LEGIT_IP) [0]) 
 Print (IP_INTR_EXTR (_LEGIT_IP) [1]) /pre>

Python determines legitimate IP and distinguishes between intranet and extranet addresses