Python bytearray Function with Examples

The bytearray function in Python generates a bytearray object, which can either transform various objects into bytearray instances or produce an empty bytearray of a designated size.

Python bytearray Function Syntax

It has the following syntax:

bytearray(x, encoding, error)

Parameters

• ✅ x (optional): It is the source that initializes the array of bytes.
• ✅ encoding (optional): It is an encoding of the string.
• ✅ error (optional): It takes action when the encoding fails.

Return

It returns an array of bytes.

Different Examples for Python bytearray Function

In this section, we will explore various instances of the Python bytearray function.

Python bytearray Function Example 1

The following example demonstrates how to represent a string as an array of bytes:

string = "Python is programming language."

# string with encoding 'utf-8'

arr = bytearray(string, 'utf-8')

print(arr)

Output:

bytearray(b'Python is programming language.')

Clarification: In the example presented above, we take a variable holding a string value and transform it into a bytearray object.

Python bytearray Function Example 2

The following example illustrates an array of bytes corresponding to a specified integer size:

size = 5

arr = bytearray(size)

print(arr)

Output:

bytearray(b'\x00\x00\x00\x00\x00')

Python bytearray Function Example 3

The following illustration demonstrates a byte array derived from an iterable collection:

rList = [2, 3, 4, 5, 6]

arr = bytearray(rList)

print(arr)

Output:

bytearray(b'\x02\x03\x04\x05\x06')