code: def read_int8(fid):
      """Read 8bit integer from bti file."""
      return _unpack_simple(fid, ">i1", np.int8)
  
imports: import numpy
  from ..._fiff.utils import read_str
label_desc: Use image node_id 6 for calling a global function with example usage: read_int8(fid) and returns: _unpack_simple