How to split string before and after certain characters?

Question

I have an assignment to create a python program that will receive an IP address and check if its valid or not, my problem is I dont know how to split the input so I will be able to check each octet whether its between 0 - 255 or not ?

Welcome to Stackoverflow. Make sure to post some of your own attempts at solving the problem. Also, read documentation on ```string.split(separator, maxsplit)``` — Serge de Gosson de Varennes, Nov 12 '20 at 15:38

score 0 · Accepted Answer · answered Nov 12 '20 at 14:31

You want to use the "split()" method.

ip = "192.68.10.10"

ip_arr = ip.split(".")

print(ip_arr)

This will return an array containing the 4 numbers:

['192', '68', '10', '10']

You can then loop through the array to check if each value is under 256. (Don't forget to convert to int before checking)

score 0 · Answer 2 · answered Nov 12 '20 at 14:34

0

Don't parse it. There's already a much more powerful library for that. From this answer:

import socket

try:
    socket.inet_aton(addr)
    # legal
except socket.error:
    # Not legal

answered Nov 12 '20 at 14:34

0xfede7c8

130
8

How to split string before and after certain characters?

2 Answers2