code: def rescale(x):
      return (x - x.min()) / (x.max() - x.min())
  
imports: import os
  import argparse
  import numpy
  import matplotlib
  import matplotlib.pyplot
  from sklearn.metrics import roc_curve, auc
  from tqdm import tqdm
  from skimage import measure, morphology
  from skimage.segmentation import mark_boundaries
  import paddle
label_desc: Use image node_id 2 for calling a global function with example usage: rescale(x) and returns: unknown