class_docstr: Exception for ggplot errors
class_docstr_tok: ["Exception","for","ggplot","errors"]
docstr: Error Message
docstr_tok: ["Error","Message"]
code: def __str__(self) -> str:
      """
      Error Message
      """
      return repr(self.message)
  
file_path: plotnine/plotnine/exceptions.py
imports: from __future__ import annotations
  import warnings
  from textwrap import dedent
  from typing import Optional, Type, Union
label_desc: Use image node_id 2 for calling the PlotnineError obj's underlying member method code with example usage: obj.__str__() and returns: repr