code: def test_fit_2d_radius_list():
      i2 = InvertedEncoding2D(
          stim_xlim=xlim,
          stim_ylim=ylim,
          stimulus_resolution=res,
          stim_radius=np.random.rand(nobs),
      )
      i2.define_basis_functions_sqgrid(nchannels=[12, 6])
      i2.fit(Xd, yd)
  
imports: import pytest
  import numpy
  import logging
  from brainiak.reconstruct.iem import InvertedEncoding1D, InvertedEncoding2D
  from brainiak.utils.fmrisim import generate_1d_gaussian_rfs, generate_1d_rf_responses
  from scipy.stats import circmean
label_desc: Use image node_id 15 for calling a global function with example usage: test_fit_2d_radius_list() without return types