Bytes Bytearray

bytes/bytearray can contain numbers between 0 and 255

Overview

What	How
`bytes`	immutable byte sequence
`bytes(10)`	create bytes of length 10
`bytes[0]`	get first byte
-	-
`bytearray`	mutable byte sequence
`bytearray(10)`	create bytearray of length 10
`bytearray[0]`	get first byte
-	-
bytes from bytearray	`bytes(bytearray)`
bytearray from bytes	`bytearray(bytes)`
copy from bytearrayOrBytes	`bytearray(bytearrayOrBytes)`

handle both with one method:

def method(data: bytearray | bytes):  # accept both types
    mydata = bytearray(data)        # copy of bytes or bytearray