code: def _read_int16(f):
      """Read a signed 16-bit integer"""
      return np.int16(struct.unpack(">h", f.read(4)[2:4])[0])
  
imports: import struct
  import numpy
  import tempfile
  import zlib
  import warnings
label_desc: Use image node_id 6 for calling a global function with example usage: _read_int16(f) and returns: np