Python 带负字节的字节数组

Question

I don't know anything about bytes. But, I have a Java application which I've developed to talk to my E-scooter.

I'm trying to write something similar on a Raspberry Pi, so I use Python. In the Java application, I have byte arrays that have negative numbers. For example:

byte[] array = new byte[90, -91, 0, 118, 57, 11...];

In Python, I get a "byte must be in range(0, 256) when trying to do this:

array = bytearray([90, -91, 0, 118, 57, 11...])

Anyone who could help? Thanks in advance.

Answer 1

Maybe you can try -91 + 256 instead of -91, the binary code is same.

use (a + 256) % 256 to change negative to postive number.

-91 and 165 in 8 bit are the same in binary representation. [1010 0101]

array = bytearray([90, 165, 0, 118, 57, 11...])