Python from hex to char

Python — Converting Hex to INT/CHAR

I am having some difficulty changing a hex to an int/char (char preferably). Via the website; http://home2.paulschou.net/tools/xlate/ I enter the hex of C0A80026 into the hex box, in the DEC / CHAR box it correctly outputs the IP I expected it to contain. This data is being pulled from an external database and I am not aware how it is being saved so all I have to work with is the hex string itself. I have tried using the binascii.unhexlify function to see if I could decode it but I fear that I may not have a great enough understanding of hex to appreciate what I am doing. Attemping to print just using an int() cast also has not produced the required results. I need some way to convert from that hex string (or one similar) to the original IP. UPDATE: For anyone who comes across this in the future I modified the below answer slightly to provide an exact printout as an IP by using;

dec_output = str(int(hex_input[0:2], 16)) + "." + str(int(hex_input[2:4], 16)) + "." + str(int(hex_input[4:6], 16)) + "." + str(int(hex_input[6:8], 16)) 

Please explain exactly how the duplication question is not a duplicate. Details matter. «doesn’t work with my problem» is too vague to mean anything.

Sorry, I assumed you had compared them already. My problem is related to decoding hex into an IP address which the other question does not cover. Also although I do not know a great deal about hex or python there are no related questions which suggests that our similarity ends at trying to decode hex but both trying to reach two different ends

It helps to avoid all assumptions. I still don’t understand why the supplied question is not the answer to your question because (1) I don’t understand the nuances of your question and (2) I don’t understand the gaps in your knowledge. Rather than assume, please update your question to detail — specifically — why a widely-accepted existing answer isn’t appropriate for this. Details matter. And updates to the question are better than comments.

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How to convert hex to char in python

Next you simply use to convert that number into a character with that Unicode (and in case the code is less than 128 ASCII) code: This results in: But is equal to (you can look it up in the ASCII table): and: Solution 2: Try this: Solution 3: The ability to include code points like inside a quoted string is a convenience for the programmer that only works in literal values inside the source code. Solution 3: Since Python 2.6 you can use simple: Solution 1: using string encode and decode function refer this for python standard encodings for python 2 for python3 Solution 2: Read the file in binary mode to preserve the hex representation into a bytes-like sequence of escaped hex characters.

Python — Converting Hex to INT/CHAR

If you want to get 4 separate numbers from this, then treat it as 4 separate numbers. You don’t need binascii .

hex_input = 'C0A80026' dec_output = [ int(hex_input[0:2], 16), int(hex_input[2:4], 16), int(hex_input[4:6], 16), int(hex_input[6:8], 16), ] print dec_output # [192, 168, 0, 38] 

This can be generalised, but I’ll leave it as an exercise for you.

>>> s = 'C0A80026' >>> map(ord, s.decode('hex')) [192, 168, 0, 38] >>> 

if you prefer list comprehensions

>>> [ord(c) for c in s.decode('hex')] [192, 168, 0, 38] >>> 

You might also need the chr function:

Python — list of character to hex, How do you convert a character to hex? say «z» — what should it be in hex? Welcome to StackOverflow! We’re not here to write your code for you

How to convert hexadecimal string to character with that code point?

You do not have to make it that hard: you can use int(. 16) to parse a hex string of the form 0x. . Next you simply use chr(..) to convert that number into a character with that Unicode (and in case the code is less than 128 ASCII) code:

But \x32 is equal to ‘2’ (you can look it up in the ASCII table):

The ability to include code points like ‘\x32’ inside a quoted string is a convenience for the programmer that only works in literal values inside the source code. Once you’re manipulating strings in memory, that option is no longer available to you, but there are other ways of getting a character into a string based on its code point value.

Also note that ‘\x32’ results in exactly the same string as ‘2’ ; it’s just typed out differently.

Given a string containing a hexadecimal literal, you can convert it to its numeric value with int(str,16) . Once you have a numeric value, you can convert it to the character with that code point via chr() . So putting it all together:

x = '0x32' print(chr(int(x,16))) #=> 2 

How to convert hexadecimal string to character with that code point?, You do not have to make it that hard: you can use int(. 16) to parse a hex string of the form 0x . Next you simply use chr(.

Hex string to character in python

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Convert Hex to String in Python

This is a tutorial on how to convert hexadecimal numbers to strings in Python. When working with hex numbers, it can be difficult to read or compare them, so converting them to strings will make the process easier.

The easiest way to convert hexadecimal value to string is to use the fromhex() function.

This function takes a hexadecimal value as a parameter and converts it into a string. The decode() function decodes bytearray and returns a string in utf-8 format.

Notice that in the string there are only numbers from 0 to 9 and letters from “a” to “f”. If you put any other letter, Python will return the error:

ValueError: non-hexadecimal number found in fromhex() arg at position 0

You can quickly convert this string back to hex using this code:

There must be “b” at the beginning of the string indicating that the value is converted to bytes.

How this conversion works

If you split this string into individual values, you will get:

“0x” at the beginning means that the value should be treated as a hexadecimal value.

This table shows how each value is converted to a letter.

Hex	Dec	Operation	ASCII
0x68	104	6*16^1 + 8*16^0 = 6*16 + 8 * 1 = 104	h
0x65	101	6*16^1 + 5*16^0 = 6*16 + 5 * 1 = 101	e
0x6c	108	6*16^1 + 12*16^0 = 6*16 + 12 * 1 = 108	l
0x6c	108	6*16^1 + 12*16^0 = 6*16 + 12 * 1 = 108	l
0x6f	111	6*16^1 + 15*16^0 = 6*16 + 15 * 1 = 111	o

Using codecs.decode

The codecs.decode is another method you can use to achieve the same result. It takes three arguments: the bytes object, encoding, and error (specifies how errors should be handled).

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Convert Hex to ASCII in Python

1. Convert Hex to ASCII in Python Using the decode() Method
2. Convert Hex to ASCII in Python Using the codecs.decode() Method

This tutorial will look into various methods to convert a hexadecimal string to an ASCII string in Python. Suppose we have a string written in hexadecimal form 68656c6c6f and we want to convert it into an ASCII character string which will be hello as h is equal to 68 in ASCII code, e is 64 , l is 6c and o is 6f .

We can convert a hexadecimal string to an ASCII string in Python using the following methods:

Convert Hex to ASCII in Python Using the decode() Method

The string.decode(encoding, error) method in Python 2 takes an encoded string as input and decodes it using the encoding scheme specified in the encoding argument. The error parameter specifies the error handling schemes to use in case of an error that can be strict , ignore , and replace .

Therefore, to convert a hex string to an ASCII string, we need to set the encoding parameter of the string.decode() method as hex . The below example code demonstrates how to use the string.decode() method to convert a hex to ASCII in Python 2.

string = "68656c6c6f" string.decode("hex") 

In Python 3, the bytearray.decode(encoding, error) method takes a byte array as input and decodes it using the encoding scheme specified in the encoding argument.

To decode a string in Python 3, we first need to convert the string to a byte array and then use the bytearray.decode() method to decode it. The bytearray.fromhex(string) method can be used to convert the string into a byte array first.

The below example code demonstrates how to use the bytearray.decode() and bytearray.fromhex(string) method to convert a hex string to ASCII string in Python 3:

string = "68656c6c6f" byte_array = bytearray.fromhex(string) byte_array.decode() 

Convert Hex to ASCII in Python Using the codecs.decode() Method

The codecs.decode(obj, encoding, error) method is similar to decode() method. It takes an object as input and decodes it using the encoding scheme specified in the encoding argument. The error argument specifies the error handling scheme to be used in case of an error.

In Python 2, the codecs.decode() returns a string as output, and in Python 3, it returns a byte array. The below example code demonstrates how to convert a hex string to ASCII using the codecs.decode() method and convert the returned byte array to string using the str() method.

import codecs  string = "68656c6c6f" binary_str = codecs.decode(string, "hex") print(str(binary_str,'utf-8')) 

Related Article — Python ASCII

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Convert from hex character to Unicode character in python

The hex string ‘\xd3’ can also be represented as: Ó . The easiest way I’ve found to get the character representation of the hex string to the console is:

Or in English, convert the hex string to a number, then convert that number to a unicode code point, then finally output that to the screen. This seems like an extra step. Is there an easier way?

3 Answers 3

Is all you have to do. You just need to somehow tell Python it’s a unicode literal; the leading u does that. It will even work for multiple characters.

If you aren’t talking about a literal, but a variable:

codepoints = '\xd3\xd3' print codepoints.decode("latin-1") 

Edit: Specifying a specific encoding when print ing will not work if it’s incompatible with your terminal encoding, so just let print do encode(sys.stdout.encoding) automatically. Thanks @ThomasK.

But, what do you do if you have a string composed of code points? How would you convert the string to the actual string representation? Is u a function? Can we write u(some_string) ?

@Geo: u is not a function, it’s part of the string literal syntax. But what is a ‘string composed of code points’?

@ThomasK I can’t check because I think my terminal is latin-1 or that silly, almost the same winodws encoding. It worked-for-me.

It’s a bit better in Python3 (Python2 is being sunsetted) but Unicode and Python do not get along very well even on the best of days, and you cannot use Python’s re library for Unicode per UTS#18’s level-1 reqs. Matthew Barnett’s regex library for both Python2 and Python3 helps a lot. See the chart on Slide 6 of my Unicode Support Shootout talk to see how dramaticaly better MRAB’s regex lib is than normal Python re . Alas,you still have Python’s fatal multiple personality disorder on UCS‐²⁄₄ though.

Moderator Note Several comments under this answer were removed because they provided more noise than signal. Please try to keep comments constructive and on topic, related to the answer at hand. If you want to have a ‘side chat’, use the chat system.

if data is something like this «\xe0\xa4\xb9\xe0\xa5\x88\xe0\xa4\xb2\xe0\xa5\x8b \xe0\xa4\x95\xe0\xa4\xb2»

Not long ago, I had a very similar problem. I had to decode files that contained unicode hex (e.g., _x0023_ ) instead of special characters (e.g., # ). The solution is described in the following code:

Script

from collections import OrderedDict import re def decode_hex_unicode_to_latin1(string: str) -> str: hex_unicodes = list(OrderedDict.fromkeys(re.findall(r'_x[?:\da-zA-Z]_', string))) for code in hex_unicodes: char = bytes.fromhex(code[2:-1]).decode("latin1")[-1] string = string.replace(code, char) return string def main() -> None: string = "|_x0020_C_x00f3_digo_x0020_|" decoded_string = decode_hex_unicode_to_latin1(string) print(string, "-->", decoded_string) return if __name__ == '__main__': main() 

Output

|_x0020_C_x00f3_digo_x0020_| --> | Código | 

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