code: def euclidean_distance(qf, gf):
      m = qf.shape[0]
      n = gf.shape[0]
      dist_mat = 2 - 2 * np.matmul(qf, gf.T)
      return dist_mat
  
imports: import os
  import re
  import cv2
  import gc
  import numpy
  import pandas
  from tqdm import tqdm
  import warnings
label_desc: Use image node_id 12 for calling a global function with example usage: euclidean_distance(qf, gf) and returns: dist_mat