micropython/tests/basics/array_add.py

# test array + array
import array

a1 = array.array('I', [1])
a2 = array.array('I', [2])
print(a1 + a2)

a1 += array.array('I', [3, 4])
print(a1)

a1.extend(array.array('I', [5]))
print(a1)