Convert an integer to a hex string in Python

This post will discuss how to convert an integer to a hexadecimal string in Python.

1. Using hex() function

The Pythonic way to convert an integer to a hexadecimal string uses the built-in function hex(). It returns the hexadecimal string in lowercase, which is prefixed by 0x.

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To get an uppercase hexadecimal string or to get rid of the prefix, use any of the solutions discussed below.

2. Using format() function

Another option is to use the built-in function format(), which can convert an integer to a hexadecimal string using the x format specification. If you use #x, the hexadecimal string is prefixed by 0x. If you use X or #X, you can get an uppercase hexadecimal string.

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3. Using f-strings

Starting with Python 3.6, you can use f-strings. You can do this by prefixing the string literal with f or F. The string literal should be enclosed within the curly braces {} and should contain the integer, followed by the formatting specification x separated by a colon :.

To prefix the hexadecimal string by 0x, use #x, and to get an uppercase hexadecimal string, use X or #X. Here’s how the code would look like:

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4. Using %x conversion

Before version 3.6, you may use the %x conversion to produce the hexadecimal string. If you use %#x, the hexadecimal literal value is prefixed by 0x. To get an uppercase hexadecimal string, use %X or %#X.

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That’s all about converting an integer to a hex string in Python.

 
Also See:

Convert a hex string to an integer in Python