code: def imread(fname, flatten=False, mode=None):
      if _have_pil:
          return _imread(fname, flatten, mode)
      raise ImportError(
          "Could not import the Python Imaging Library (PIL)"
          " required to load image files.  Please refer to"
          " http://pillow.readthedocs.org/en/latest/installation.html"
          " for installation instructions."
      )
  
label_desc: Use image node_id 1 for calling a global function with example usage: imread(fname, flatten, mode) and returns: _imread