code: def _parse_parameters(val_type, val):
      
      if val_type == "logical":
          return val == "T"
      elif val_type == "int":
          return int(val)
      elif val_type == "string":
          return val.strip()
      else:
          return float(val)
docs: Helper function to convert a Vasprun parameter into the proper type.
      Boolean, int and float types are converted.
  
      Args:
          val_type: Value type parsed from vasprun.xml.
          val: Actual string value parsed for vasprun.xml.