code: def convert_linewidth_array(width_array):
      if len(width_array) == 1:
          return width_array[0]
      else:
          return width_array
  
imports: import math
  import warnings
  import matplotlib.dates
  from matplotlib import __version__
label_desc: Use image node_id 18 for calling a global function with example usage: convert_linewidth_array(width_array) and returns: width_array, width_array