code: def writeConvWeights(fname, cmapIn):
      cmapOut = 2 * cmapIn
      w = np.eye(cmapOut, cmapIn)
      np.savetxt(fname, w, fmt="%d", delimiter=" ")
  
label_desc: Use image node_id 1 for calling a global function with example usage: writeConvWeights(fname, cmapIn) without return types