code: def splitlabel(label,splitby=' ',ctrl='__'):
      
      splits=label.split(splitby)
      if len(splits)==2:
          return splits
      elif len(splits)==1:
  
          return splits+[ctrl]
docs: used for adding labels in plots.
  
      :param label: string
      :param splitby: string split the label by this character/string
      :param ctrl: string, marker that denotes a control condition