How Can I Easily Convert Bytes to Hex Strings and Vice Versa in Python 3?

Converting Bytes to Hex Strings in Python 3: The Simplified Method

In Python 3, the process of converting bytes to a hex string was once a convoluted and confusing task. However, with the introduction of Python 3.5, a straightforward solution emerged.

The hex() Method

Python 3.5 introduced the hex() method for both bytes and bytearray data types. This method elegantly transforms the sequence of bytes into a corresponding hex string:

bytes_data = b'\xde\xad\xbe\xef'
hex_string = bytes_data.hex()  # Output: 'deadbeef'

Reverse Conversion

The fromhex() function has also been added to the bytes class, providing the reverse functionality. It converts a hex string back into a byte sequence:

hex_string = 'deadbeef'
bytes_data = bytes.fromhex(hex_string)  # Output: b'\xde\xad\xbe\xef'

Compatibility

Both the hex() and fromhex() methods are supported in all versions of Python 3.5 and later. This ensures a consistent and convenient method for working with bytes and hex strings across different Python environments.

Additional Resources

For further information, refer to the official Python documentation:

• [bytes.hex()](https://docs.python.org/3/library/stdtypes.html#bytes.hex)
• [bytes.fromhex()](https://docs.python.org/3/library/stdtypes.html#bytes.fromhex)

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