IP address conversion using Python

Question

I want to convert an ip address read from a file in the decimal format (192.168.65.72) to one in binary format {110000001010100001000001010001000}.I am reading the ip address in the decimal format from a file.Find the code snippet below.

/*contains 192.168.65.72*/
filter = open("filter.txt", "r")

for line in filter:
    bytePattern = "([01]?\d\d?|2[0-4]\d|25[0-5])"
    regObj = re.compile("\.".join([bytePattern]*4))
    for match in regObj.finditer(line):
        m1,m2,m3,m4 = match.groups()
        print "%s %s %s %s" %(m1, m2, m3, m4)

I want to convert m1,m2,m3 and m4 each into an 8bit binary value.I cannot figure out a way to do that.I am new to python.Any help will be greatly appreciated.

Cheers.

I'm guessing that you either want the IP address as a plain old 32-bit integer, or you want 4 bytes of data holding an IP address. I suspect you don't actually want a string containing 32 1's and 0's. — Omnifarious
– Omnifarious, Commented Aug 12, 2010 at 6:23

Pratik Deoghare · Accepted Answer · 2010-08-12 06:17:23Z

5

''.join([ bin(int(x))[2:].rjust(8,'0') for x in '123.123.123.123'.split('.')])

edited Aug 12, 2010 at 6:17

answered Aug 12, 2010 at 6:11

Pratik Deoghare

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6 Comments

poke Over a year ago

Be careful about required padding. Each byte in the IP needs to be represented by 8 bit, regardless of the value.

Omnifarious Over a year ago

''.join([bin(256 + int(x))[3:] for x in '123.123.123.123'.split('.')])

Pratik Deoghare Over a year ago

@Omnifarious bin(256 + int(x) this is one god damn good idea :) +1

liv2hak Over a year ago

I am a python newbie.I tried the above thing but it gives NameError: name 'bin' is not defined. I googled bin function in python and came to know that it was a part of the python standard library.do i need to import any other package to get the python standard library? Also what is the variable x supposed to mean? in the above explanation.It may not be the most intelligent question in the world but I do not understand it. Thank very much in advance. Cheers, liv2hak

Pratik Deoghare Over a year ago

1. No,you need not import anything to get bin. 2. What is used in above answer is called list comprehension. You can read docs.python.org/tutorial/…. If you don't understand something please let me know. Best of luck!

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CrackerJack9 · Accepted Answer · 2013-01-18 04:15:03Z

4

Convert an IPv4 address from dotted-quad string format (for example, ‘123.45.67.89’) to 32-bit packed binary format:

socket.inet_aton("192.168.65.72")

edited Jan 18, 2013 at 4:15

CrackerJack9

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answered Aug 12, 2010 at 7:04

Matt Joiner

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2 Comments

avi Over a year ago

It returns '\xc0\xa8AH'

Matt Joiner Over a year ago

@avi: Yes that's correct. That's a string literal representing the 4 bytes. I recommend you switch to Python3, which should more correctly return a bytes literal instead.

Andre Holzner · Accepted Answer · 2015-03-18 13:54:07Z

2

If you want a string containing the raw data for the 32 bit IP address:

import struct
struct.pack('4B', *(int(x) for x in '123.123.123.123'.split('.')))

Or if you want a 32-bit integer containing the IP address:

import struct
struct.unpack('>I', struct.pack('4B', *(int(x) for x in '123.123.123.123'.split('.'))))

edited Mar 18, 2015 at 13:54

Andre Holzner

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answered Aug 12, 2010 at 6:21

Omnifarious

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Comments

poke · Accepted Answer · 2010-08-12 06:08:20Z

1

>>> bin( 192 )
'0b11000000'

String manipulation does the rest. Note however that in an IP all but the first parts are allowed to be zero.

answered Aug 12, 2010 at 6:08

poke

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Comments

victoria55 · Accepted Answer · 2021-02-23 22:14:27Z

0

You can use the function clean_ip() from the library DataPrep if you read your file into a DataFrame. Install DataPrep with pip install dataprep.

from dataprep.clean import clean_ip
df = pd.DataFrame({"ip": ["192.168.65.72", "123.123.123.123"]})

df2 = clean_ip(df, "ip", output_format="binary")
# print(df2)
                ip                          ip_clean
0    192.168.65.72  11000000101010000100000101001000
1  123.123.123.123  01111011011110110111101101111011

answered Feb 23, 2021 at 22:14

victoria55

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