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master
maths/is_ip_v4_address_valid.py
75 строк
2 KB
mahdi tavasoli
fix is_ip_v4_address_valid.py (#12394)
30 дек 2024, 13:22
Не верифицирован
30 дек 2024, 13:22
68b4c6b
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""" wiki: https://en.wikipedia.org/wiki/IPv4 Is IP v4 address valid? A valid IP address must be four octets in the form of A.B.C.D, where A, B, C and D are numbers from 0-255 for example: 192.168.23.1, 172.255.255.255 are valid IP address 192.168.256.0, 256.192.3.121 are invalid IP address """ def is_ip_v4_address_valid(ip: str) -> bool: """ print "Valid IP address" If IP is valid. or print "Invalid IP address" If IP is invalid. >>> is_ip_v4_address_valid("192.168.0.23") True >>> is_ip_v4_address_valid("192.256.15.8") False >>> is_ip_v4_address_valid("172.100.0.8") True >>> is_ip_v4_address_valid("255.256.0.256") False >>> is_ip_v4_address_valid("1.2.33333333.4") False >>> is_ip_v4_address_valid("1.2.-3.4") False >>> is_ip_v4_address_valid("1.2.3") False >>> is_ip_v4_address_valid("1.2.3.4.5") False >>> is_ip_v4_address_valid("1.2.A.4") False >>> is_ip_v4_address_valid("0.0.0.0") True >>> is_ip_v4_address_valid("1.2.3.") False >>> is_ip_v4_address_valid("1.2.3.05") False """ octets = ip.split(".") if len(octets) != 4: return False for octet in octets: if not octet.isdigit(): return False number = int(octet) if len(str(number)) != len(octet): return False if not 0 <= number <= 255: return False return True if __name__ == "__main__": ip = input().strip() valid_or_invalid = "valid" if is_ip_v4_address_valid(ip) else "invalid" print(f"{ip} is a {valid_or_invalid} IPv4 address.")