Say you have this simple variable declaration:

from ctypes import c_uint8, POINTER

A = POINTER(c_uint8)()

In cpp, this is equivalent to:

const uint8_t *A;
// After declaring, do something that would fill up A...

The goal is to convert A into bytearray in Python by slicing so that I can change parts of it.

Correct me if I’m wrong, will this work?

from ctypes import c_uint8, POINTER

A = POINTER(c_uint8)()
# feed A to a function that would fill it up... 
C = bytearray(A)
C[:6] = b'something'

Will it work? Please give me a complete explanation, thanks!