Python bytes() Function

Last Updated : 17 Mar 2025

The python bytes() function in Python is used for returning a bytes object. It is an immutable version of bytearray() function.

It can create empty bytes object of the specified size.

Python bytes() Function Syntax

It has the following syntax:

Parameters

• source is used to initialize the bytes object. It is an optional parameter.
• encoding is optional unless source is string type. It is used to convert the string to bytes using str.encode() function
• errors is also an optional parameter. It is used when the source is string type. Also, when encoding fails due to some error.

Return

It returns a bytes object.

Different Examples for Python bytes() Function Example

Let's see some examples of bytes() function to understand it's functionality.

Python bytes() Function Example 1

This is a simple example of converting string into bytes.

Output:

Python bytes() Function Example 2

This example creates a byte of a given integer size.

Output:

Python bytes() Function Example 3

This example converts iterable list to bytes.

Output: