Python: join two bytearray objects

Question

I would like to concatenate a bytearray to another bytearray. I thought this might work:

byt1 = bytearray(10)
byt2 = bytearray(10)
byt1.join(byt2)
print(repr(byt1))

byt1.join(byt2)

TypeError: sequence item 0: expected a bytes-like object, int found

What is the most efficient way to achieve this?

Answer 1

Create a new combined bytearray from two:

byt_combined = byt1 + byt2

Extend one bytearray with another. This changes byt1:

byt1.extend(byt2)