code: def show_fallback_warning():
      msg = """
  ------------------------------------------------------------
      WARNING: PyCaffe not found!
      Falling back to a pure protocol buffer implementation.
      * Conversions will be drastically slower.
      * This backend is UNTESTED!
  ------------------------------------------------------------
  
  """
      sys.stderr.write(msg)
  
file_path: MMdnn/mmdnn/conversion/caffe/resolver.py
imports: import sys
label_desc: Use image node_id 3 for calling a global function with example usage: show_fallback_warning() without return types