How to Easily Convert Bytes to Hex and Back in Python 3?

Hex Conversion of Bytes in Python 3: A Simplified Approach

There's often confusion around converting bytes to hexadecimal strings in Python 3. You may have encountered claims about a non-existent bytes.hex method or attempted various functions with no luck. This article aims to provide a straightforward solution to this conversion challenge.

From Bytes to Hex

In Python 3.5 and later, the process has become significantly easier with the introduction of the hex method:

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

This method conveniently generates a hexadecimal representation of the bytes in lower case.

From Hex to Bytes

To convert a hexadecimal string back to bytes, use the bytes.fromhex function:

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

This function converts the hexadecimal string into the corresponding bytes, restoring its original byte form.

Note:

This method also works with the mutable bytearray type.

References:

For further details and examples, refer to the official Python documentation: https://docs.python.org/3/library/stdtypes.html#bytes.hex

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