Lab 3 of 5
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Semi-Guided
Write a Custom InvalidIPAddress Exception
Objective: Define a custom exception class and raise it when an IP address fails a basic format check.
Instructions
Create a file called lab3.py. Define a custom exception class called InvalidIPAddress. Write a function called validate_ip(ip) that raises it if the IP does not have exactly 4 dot-separated parts.
Test it against these three IPs:
test_ips = ["192.168.1.1", "10.1.1", "172.16.0.1"]
Your output must match exactly:
192.168.1.1 — valid
10.1.1 — INVALID
172.16.0.1 — valid
Run it with python3 lab3.py. Paste your output below and submit.
💡 Show Hint
class InvalidIPAddress(Exception): pass. In validate_ip: split on "." and check len(parts) != 4. Wrap the call in try/except InvalidIPAddress.
Paste Your Output