text: #-----------------------------------------------------------------------------
  # Copyright (c) 2012 - 2022, Anaconda, Inc., and Bokeh Contributors.
  # All rights reserved.
  #
  # The full license is in the file LICENSE.txt, distributed with this software.
  #-----------------------------------------------------------------------------
  ''' A version of the Auto MPG data set.
  
  License: `CC0`_
  
  Sourced from https://archive.ics.uci.edu/ml/datasets/auto+mpg
  
  This module contains two pandas Dataframes: ``autompg`` and ``autompg_clean``.
  The "clean" version has cleaned up the ``"mfr"`` and ``"origin"`` fields.
  
  .. rubric:: ``autompg``
  
  :bokeh-dataframe:`bokeh.sampledata.autompg.autompg`
  
  .. rubric:: ``autompg_clean``
  
  :bokeh-dataframe:`bokeh.sampledata.autompg.autompg_clean`
  
  '''
  
  #-----------------------------------------------------------------------------
  # Boilerplate
  #-----------------------------------------------------------------------------
  from __future__ import annotations
  
  import logging # isort:skip
  log = logging.getLogger(__name__)
  
  #-----------------------------------------------------------------------------
  # Imports
  #-----------------------------------------------------------------------------
  
  # Bokeh imports
  from ..util.sampledata import package_csv
  
  #-----------------------------------------------------------------------------
  # Globals and constants
  #-----------------------------------------------------------------------------
  
  __all__ = (
      'autompg',
      'autompg_clean',
  )
  
  #-----------------------------------------------------------------------------
  # General API
  #-----------------------------------------------------------------------------
  
  #-----------------------------------------------------------------------------
  # Dev API
  #-----------------------------------------------------------------------------
  
  #-----------------------------------------------------------------------------
  # Private API
  #-----------------------------------------------------------------------------
  
  
  def _clean_data(df):
      '''
  
      '''
      df = df.copy()
      df['mfr'] = [x.split()[0] for x in df.name]
      df.loc[df.mfr=='chevy', 'mfr'] = 'chevrolet'
      df.loc[df.mfr=='chevroelt', 'mfr'] = 'chevrolet'
      df.loc[df.mfr=='maxda', 'mfr'] = 'mazda'
      df.loc[df.mfr=='mercedes-benz', 'mfr'] = 'mercedes'
      df.loc[df.mfr=='toyouta', 'mfr'] = 'toyota'
      df.loc[df.mfr=='vokswagen', 'mfr'] = 'volkswagen'
      df.loc[df.mfr=='vw', 'mfr'] = 'volkswagen'
  
      ORIGINS = ['North America', 'Europe', 'Asia']
      df.origin = [ORIGINS[x-1] for x in df.origin]
  
      return df
  
  #-----------------------------------------------------------------------------
  # Code
  #-----------------------------------------------------------------------------
  
  autompg = package_csv('autompg', 'auto-mpg.csv')
  
  autompg_clean = _clean_data(autompg)
  