How to make a cyclic reset of a byte through zero by sum?

I created bytes. Also I try to make addition of bytes. But I am getting an error

ValueError: byte must be in range(0, 256)

Instead of an error, I expect a loop, for example 255+2 = 1. How can I do it like in C?

bytes_ = bytearray([0xFF, 0xFF, 0xFF])  
bytes_[0] = bytes_[0] + 1
bytes_[1] = bytes_[1] + 2
bytes_[2] = bytes_[2] + 3
print(bytes_) 

Usually adding relies on bitwise addition of the bits using the carry flag in a register of the CPU. The excessive bits are skipped (the value can be seen in the carry flag) say in an 8 bit register, so only the numbers 0 to 255 are represented. See here for some internals.

Python bytes don't work like a CPU register.

This is what at least "cyles" through a byte:

byte=0xF9
for i in range(10):
  byte = (byte+1) & 255
  print(byte)

You normally add, using integer arithmetics and cut off all excessive bits by using a bitwise AND: & 255.

Output:

250
251
252
253
254
255
0
1
2
3

Your example modified:

bytes_ = bytearray([0xF9])
for i in range(10):
  bytes_[0] = (bytes_[0] + 1) & 255
  print(bytes_[0])

Gives the same output.