Create an IP Address as a hex value

Question

I am running the below function in python (3x) to generate a random IP Address

def get_ip_address(self):
            x = ".".join(map(str, (random.randint(0, 255)
                                   for _ in range(4))))
            return x

However I need to convert the IP address generated into a hex value, I dont need to do anything complicated and am happy to either convert x post creation or do it in the create Ip address function. I need to be able to easily see what the IP address is I am creating and converting as this is part of a test Suite and at the other end the Hex IP Address is converted back. I also need it in the format 0xb15150ca

Bharel · Accepted Answer · 2018-09-07 12:40:13Z

2

You're complicating things. Just take the IP address as an int and convert it into hex:

# Generate a random 
>>> hex(random.randint(0,(1<<32)-1))
'0x85c90851'
>>> hex(random.randint(0,(1<<32)-1))
'0xfb4f592d'

If you always wish for it to be exactly 8 hex digits, and strip the 0x up front, you may as well format it straight like this:

>>> "{:0X}".format(random.randint(0,(1<<32)-1))
'4CC27A5E'

If you wish to know the IP, use the ipaddress module like so:

import ipaddress
>>> ip = random.randint(0,(1<<32)-1)
>>> ipaddress.ip_address(ip)
IPv4Address('238.53.246.162')
>>> "{:0X}".format(ip)
'EE35F6A2'

edited Sep 7, 2018 at 12:40

answered Sep 7, 2018 at 11:38

Bharel

27.5k8 gold badges52 silver badges100 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Richard C Over a year ago

Thanks this works great for encoding, but I need to know what the IP address is before its encoded (should have mentioned that in the question sorry).

Bharel Over a year ago

@RichardC Edited.

gehbiszumeis · Accepted Answer · 2018-09-07 12:20:51Z

1

You can extend you function as follows:

def get_ip_address():

    x = ".".join(map(str, (random.randint(0, 255)
                           for _ in range(4))))

    # Split you created decimal IP in single numbers
    ip_split_dec = str(x).split('.')

    # Convert to hex
    ip_split_hex = [int(t) for t in ip_split_dec]

    # Construct hex IP adress
    # ip_hex = '.'.join([hex(X)[2:] for X in ip_split_hex]) # Format hh.hh.hh.hh
    ip_hex = '0x' + ''.join([hex(X)[2:] for X in ip_split_hex]) # Format 0xhhhhhhhh

    return ip_hex

which will give you

>>> address = get_ip_address()
>>> 0xa535f08b

You can also combine this with the construction of your decimal IP to spare some code lines

Btw: As long as your function is no method of a class, theres is no need for the self in your function definition

edited Sep 7, 2018 at 12:20

answered Sep 7, 2018 at 11:47

gehbiszumeis

3,7495 gold badges28 silver badges45 bronze badges

3 Comments

Richard C Over a year ago

The function is part of a larger class hence the self. I need the IP address to be in the format 0xb15150ca thanks.

gehbiszumeis Over a year ago

In that case you can use the edited code from my answer or adapt the code of @bharel answer below

Richard C Over a year ago

Going for the other option, this works but the other option is a simpler overall solution.

Collectives™ on Stack Overflow

Create an IP Address as a hex value

2 Answers 2

2 Comments

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related