docs: def verbose_print(message, *, operation, verbosity):
      """
      Prints *message* to stderr only if the given *operation* is in the list
      *verbosity*. If "all" is in *verbosity*, all operations are printed.
  
      **Parameters**
  
      message : str
          The message to print.
      operation : str
          The type of operation being performed.
      verbosity : [str] or None
          The list of operations to print *message* for. If "all" is contained
          in the list, then all operations are printed. If None, no operation is
          printed.
  
      **Returns**
  
      None
      """
      if (verbosity is not None) and ((operation in verbosity) or
                                      ("all"     in verbosity)):
          print(message, file=stderr)