code: def test_set_params():
      trf = StandardScaler(with_std=False)
      transformer = GroupedTransformer(trf, groups=0)
  
      transformer.set_params(transformer__with_std=True)
      assert trf.with_std
  
imports: import itertools
  import numpy
  import pandas
  import pytest
  from sklearn.linear_model import LinearRegression
  from sklearn.preprocessing import MinMaxScaler, StandardScaler
  from sklearn.utils import check_X_y
  from sklego.common import flatten
  from sklego.datasets import load_penguins
  from sklego.meta import GroupedTransformer
  from tests.conftest import general_checks, k_vals, n_vals, np_types, select_tests, transformer_checks
label_desc: Use image node_id 10 for calling a global function with example usage: test_set_params() without return types