code: def rad_to_deg(theta):
      return theta * 180 / np.pi
  
imports: import os
  import traceback
  import sys
  import cv2
  import numpy
  from PIL import Image
  from scipy.ndimage.filters import rank_filter
  import pytesseract
label_desc: Use image node_id 15 for calling a global function with example usage: rad_to_deg(theta) and returns: unknown