How Do I Convert Bytes to a Hex String (and Back) in Python 3?

Converting Bytes to a Hex String in Python 3

As a Python developer, you may occasionally need to convert bytes to a hex string. While various methods have been proposed, the most straightforward way is to utilize the bytes.hex() method introduced in Python 3.5. This method offers a highly efficient and consistent approach to converting bytes to hex strings.

Let's delve into an example to illustrate its usage:

>>> b'\xde\xad\xbe\xef'.hex()
'deadbeef'

As you can see, the bytes.hex() method effectively transforms bytes into a hex string. The resulting hex string is case-insensitive and always uses lowercase characters.

The conversion process can also be reversed using the bytes.fromhex() method:

>>> bytes.fromhex('deadbeef')
b'\xde\xad\xbe\xef'

Here, the method takes a hex string and converts it back to its byte representation.

Additionally, the bytes.fromhex() and bytes.hex() methods work seamlessly with the mutable bytearray type, allowing you to convert and manipulate byte arrays with ease.

For more detailed information and technical documentation, refer to the following resource: https://docs.python.org/3/library/stdtypes.html#bytes.hex

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