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fix is_ip_v4_address_valid

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This commit is contained in:
m.tavasoli 2024-11-23 20:45:58 +03:30
parent f3f32ae3ca
commit ba356ca4b4
1 changed files with 38 additions and 15 deletions
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53
maths/is_ip_v4_address_valid.py
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@ -1,13 +1,17 @@
""" """
wiki: https://en.wikipedia.org/wiki/IPv4
Is IP v4 address valid? Is IP v4 address valid?
A valid IP address must be four octets in the form of A.B.C.D, A valid IP address must be four numbers in the form of A.B.C.D,
where A,B,C and D are numbers from 0-254 where A,B,C and D are numbers from 0-255
for example: 192.168.23.1, 172.254.254.254 are valid IP address
192.168.255.0, 255.192.3.121 are invalid IP address for example:
192.168.23.1, 172.254.254.254 are valid IP address
192.168.01.0, 256.192.3.121 are invalid IP address
""" """
def is_ip_v4_address_valid(ip_v4_address: str) -> bool: def is_ip_v4_address_valid(ip: str) -> bool:
""" """
print "Valid IP address" If IP is valid. print "Valid IP address" If IP is valid.
or or
@ -17,12 +21,15 @@ def is_ip_v4_address_valid(ip_v4_address: str) -> bool:
True True
>>> is_ip_v4_address_valid("192.255.15.8") >>> is_ip_v4_address_valid("192.255.15.8")
False True
>>> is_ip_v4_address_valid("172.100.0.8") >>> is_ip_v4_address_valid("172.100.0.8")
True True
>>> is_ip_v4_address_valid("254.255.0.255") >>> is_ip_v4_address_valid("0.0.0.0")
True
>>> is_ip_v4_address_valid("254.256.0.255")
False False
>>> is_ip_v4_address_valid("1.2.33333333.4") >>> is_ip_v4_address_valid("1.2.33333333.4")
@ -40,17 +47,33 @@ def is_ip_v4_address_valid(ip_v4_address: str) -> bool:
>>> is_ip_v4_address_valid("1.2.A.4") >>> is_ip_v4_address_valid("1.2.A.4")
False False
>>> is_ip_v4_address_valid("0.0.0.0") >>> is_ip_v4_address_valid("1.2.3.05")
True
>>> is_ip_v4_address_valid("1.2.3.")
False False
""" """
octets = [int(i) for i in ip_v4_address.split(".") if i.isdigit()]
return len(octets) == 4 and all(0 <= int(octet) <= 254 for octet in octets) parts = ip.split('.')
if len(parts) != 4:
return False
for part in parts:
if not part:
return False
for i in range(len(part)):
if not part[i].isdigit():
return False
if part[0] == '0' and len(part) > 1:
return False
if not (0 <= int(part) <= 255):
return False
return True
if __name__ == "__main__": if __name__ == "__main__":
ip = input().strip() ip = input().strip()
valid_or_invalid = "valid" if is_ip_v4_address_valid(ip) else "invalid" result = "valid" if is_ip_v4_address_valid(ip) else "invalid"
print(f"{ip} is a {valid_or_invalid} IP v4 address.") print(f"{ip} is a {result} IPv4 address.")