code: def patch_lines(x):
      """
      Draw lines between groups
      """
      for idx in range(len(x) - 1):
          x[idx] = np.vstack([x[idx], x[idx + 1][0, :]])
      return x
  
imports: import functools
  import sys
  import numpy
  import copy
  from scipy.interpolate import PchipInterpolator
  import seaborn
  import itertools
  import pandas
  from matplotlib.lines import Line2D
label_desc: Use image node_id 11 for calling a global function with example usage: patch_lines(x) and returns: x