code: def toy_df_widths(self, toy_df):
      toy_df["width"] = [0.8, 0.2, 0.4]
      return toy_df
  
imports: from itertools import product
  import numpy
  import pandas
  from pandas.testing import assert_series_equal
  from numpy.testing import assert_array_equal, assert_array_almost_equal
  from seaborn._core.moves import Dodge, Jitter, Shift, Stack, Norm
  from seaborn._core.rules import categorical_order
  from seaborn._core.groupby import GroupBy
  import pytest
label_desc: Use image node_id 3 for calling the MoveFixtures obj's underlying member method code with example usage: obj.toy_df_widths(toy_df) and returns: toy_df