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dc07a85076
* Update and rename check_valid_ip_address.py to is_ip_v4_address_valid.py
New test cases that the algorithm must detect:
* [ ] an octet much bigger than 255
* [ ] an octet is negative
* [ ] number of octets is less than 4
* [ ] number of octets is greater than 4
* [ ] an octet is a letter
* updating DIRECTORY.md
* Add two more tests to is_ip_v4_address_valid.py
Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
Co-authored-by: John Law <johnlaw.po@gmail.com>
57 lines
1.4 KiB
Python
57 lines
1.4 KiB
Python
"""
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Is IP v4 address valid?
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A valid IP address must be four octets in the form of A.B.C.D,
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where A,B,C and D are numbers from 0-254
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for example: 192.168.23.1, 172.254.254.254 are valid IP address
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192.168.255.0, 255.192.3.121 are invalid IP address
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"""
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def is_ip_v4_address_valid(ip_v4_address: str) -> bool:
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"""
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print "Valid IP address" If IP is valid.
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or
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print "Invalid IP address" If IP is invalid.
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>>> is_ip_v4_address_valid("192.168.0.23")
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True
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>>> is_ip_v4_address_valid("192.255.15.8")
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False
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>>> is_ip_v4_address_valid("172.100.0.8")
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True
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>>> is_ip_v4_address_valid("254.255.0.255")
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False
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>>> is_ip_v4_address_valid("1.2.33333333.4")
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False
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>>> is_ip_v4_address_valid("1.2.-3.4")
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False
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>>> is_ip_v4_address_valid("1.2.3")
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False
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>>> is_ip_v4_address_valid("1.2.3.4.5")
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False
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>>> is_ip_v4_address_valid("1.2.A.4")
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False
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>>> is_ip_v4_address_valid("0.0.0.0")
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True
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>>> is_ip_v4_address_valid("1.2.3.")
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False
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"""
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octets = [int(i) for i in ip_v4_address.split(".") if i.isdigit()]
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return len(octets) == 4 and all(0 <= int(octet) <= 254 for octet in octets)
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if __name__ == "__main__":
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ip = input().strip()
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valid_or_invalid = "valid" if is_ip_v4_address_valid(ip) else "invalid"
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print(f"{ip} is a {valid_or_invalid} IP v4 address.")
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