In this article, you will learn how to validate an IPv4 IP address is valid or not using Python. There are many ways to validate the IPv4 IP address using python.
Here are some examples to validate whether the IPv4 IP address is valid or not.
In this example, we are not using any python library to validate an IPv4 IP address is valid or not using python.
Here is the source of the code of the program to validate whether an IPv4 IP address is Valid or not.
# How to Validate an IPv4 IP Address is Valid or Not using Python
class Solution(object):
def Isvalid_IPv4_IPAddress(self, IP):
def isIPv4(s):
try: return str(int(s)) == s and 0 <= int(s) <= 255
except: return False
if IP.count(".") == 3 and all(isIPv4(i) for i in IP.split(".")):
return IP+" is a valid IPv4 IP Address"
return IP+" is not a valid IPv4 IP Address"
ob = Solution()
print(ob.Isvalid_IPv4_IPAddress("172.16.254.1"))
print(ob.Isvalid_IPv4_IPAddress("172.16.1"))
print(ob.Isvalid_IPv4_IPAddress("5"))
print(ob.Isvalid_IPv4_IPAddress("172.16.254.266"))172.16.254.1 is a valid IPv4 IP Address
172.16.1 is not a valid IPv4 IP Address
5 is not a valid IPv4 IP Address
172.16.254.266 is not a valid IPv4 IP Address
In this example, we used the built-in python socket module to validate the IPv4 IP address. And the Python function inet_pton() from the socket module converts an IP address in string format to a packed binary format.
Here is the source code of the program to validate an IPv4 IP address is Valid or Invalid.
# Import Module
import socket
def is_valid_ipv4_address(address):
try:
socket.inet_pton(socket.AF_INET, address)
except AttributeError: # no inet_pton here, sorry
try:
socket.inet_aton(address)
except socket.error:
return False
return address.count('.') == 3
except socket.error: # not a valid address
return False
return True
print(is_valid_ipv4_address("123.52.72.55")) # Output ==> True
print(is_valid_ipv4_address("123.52.720.55")) # Output ==> False
print(is_valid_ipv4_address("123.52.72")) # Output ==> False
print(is_valid_ipv4_address("123")) # Output ==> False
print(is_valid_ipv4_address("123.521.72.55")) # Output ==> FalseIn this example, we used the ipaddress.ip_address() method from the ipaddress module to validate the IPv4 IP address.
Here is the source code of the program to validate the IPv4 IP address is valid or invalid.
# Import Module
import ipaddress
def Isvalid_IPv4_IPAddress(ip):
try:
ipaddress.ip_address(ip)
return ip+" is a valid IPv4 IP Address"
except ValueError as errorCode:
#uncomment below if you want to display the exception message.
#print(errorCode)
#comment below if above is uncommented.
pass
return ip+" is not a valid IPv4 IP Address"
# Print Output
print(Isvalid_IPv4_IPAddress("123.52.72.55"))
print(Isvalid_IPv4_IPAddress("123.52.720.55"))
print(Isvalid_IPv4_IPAddress("123.52.72"))
print(Isvalid_IPv4_IPAddress("123"))
print(Isvalid_IPv4_IPAddress("123.521.72.55"))
123.52.72.55 is a valid IPv4 IP Address
123.52.720.55 is not a valid IPv4 IP Address
123.52.72 is not a valid IPv4 IP Address
123 is not a valid IPv4 IP Address
123.521.72.55 is not a valid IPv4 IP Address
In this example, we are using any module or IP related function. In this method, we used the split() to split the string from the special character and isdigit() method to check where the element of the list is a digit or not.
Here is the source code of the program to validate the IPv4 IP address is valid or not.
# Define A Function To Validate an IPv4 IP Address
def Isvalid_IPv4_IPAddress(ip):
a = ip.split('.')
if len(a) != 4:
return ip + " is not a Valid IPv4 IP Address"
for x in a:
if not x.isdigit():
return ip + " is not a Valid IPv4 IP Address"
i = int(x)
if i < 0 or i > 255:
return ip + " is not a Valid IPv4 IP Address"
return ip + " is a Valid IPv4 IP Address"
# Print Output
print(Isvalid_IPv4_IPAddress("123.52.72.55"))
print(Isvalid_IPv4_IPAddress("123.52.720.55"))
print(Isvalid_IPv4_IPAddress("123.52.72"))
print(Isvalid_IPv4_IPAddress("123"))
print(Isvalid_IPv4_IPAddress("123.521.72.55"))
123.52.72.55 is a Valid IPv4 IP Address
123.52.720.55 is not a Valid IPv4 IP Address
123.52.72 is not a Valid IPv4 IP Address
123 is not a Valid IPv4 IP Address
123.521.72.55 is not a Valid IPv4 IP Address
In this example, we used the regular Expression.
Here is the source code of the program to validate the IPv4 IP address is Valid or not.
# Import Module
import re
def Isvalid_IPv4_IPAddress(ip):
# Regular Expression for IPv4 Version IP Address
m = re.match(r"^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$", ip)
return bool(m) and all(map(lambda n: 0 <= int(n) <= 255, m.groups()))
# Print Output
print(Isvalid_IPv4_IPAddress("123.52.72.55")) # Output => True
print(Isvalid_IPv4_IPAddress("123.52.720.55")) # Output => False
print(Isvalid_IPv4_IPAddress("123.52.72")) # Output => False
print(Isvalid_IPv4_IPAddress("123")) # Output => False
print(Isvalid_IPv4_IPAddress("123.521.72.55")) # Output => False
print(Isvalid_IPv4_IPAddress("123.21.72.q5")) # Output => False
Here is the source code of the program to validate whether an IPv4 IP address is valid or not.
# Import Module
import re
def Isvalid_IPv4_IPAddress(ip):
reg = r"^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$"
if re.match(reg, ip):
return ip+ " is a valid IPv4 IP address"
else:
return ip+ " is not a valid IPv4 IP address"
# Print the Output
print(Isvalid_IPv4_IPAddress("123.52.72.55"))
print(Isvalid_IPv4_IPAddress("123.52.720.55"))
print(Isvalid_IPv4_IPAddress("123.52.72"))
print(Isvalid_IPv4_IPAddress("123"))
print(Isvalid_IPv4_IPAddress("123.521.72.55"))
print(Isvalid_IPv4_IPAddress("123.521.72.a5"))
123.52.72.55 is a valid IPv4 IP address
123.52.720.55 is not a valid IPv4 IP address
123.52.72 is not a valid IPv4 IP address
123 is not a valid IPv4 IP address
123.521.72.55 is not a valid IPv4 IP address
123.521.72.a5 is not a valid IPv4 IP address
I hope this article will help you to understand how to validate an IPv4 IP address is valid or not using python.
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