code: def test_host_array_from_buffers():
      a = host_array_from_buffers([b"abc", b"de"])
      a[:1] = b"f"
      assert bytes(a) == b"fbcde"
  
imports: from __future__ import annotations
  import pytest
  from distributed.protocol.utils import host_array, host_array_from_buffers
label_desc: Use image node_id 2 for calling a global function with example usage: test_host_array_from_buffers() without return types