code: def norm_angle(angle, range=[-np.pi / 4, np.pi]):
      return (angle - range[0]) % range[1] + range[0]
  
file_path: PaddleDetection/ppdet/modeling/rbox_utils.py
imports: import math
  import paddle
  import numpy
  import cv2
label_desc: Use image node_id 1 for calling a global function with example usage: norm_angle(angle, range) and returns: unknown