How to append to bytes in python 3

Question

I have some bytes.

b'x01x02x03'

And an int in range 0..255.

5

Now I want to append the int to the bytes like this:

b'x01x02x03x05'

How to do it? There is no append method in bytes. I don't even know how to make the integer become a single byte.

>>> bytes(5)
b'x00x00x00x00x00'

question from:https://stackoverflow.com/questions/27001419/how-to-append-to-bytes-in-python-3

Answer 1

bytes is immutable. Use bytearray.

xs = bytearray(b'x01x02x03')
xs.append(5)