code: def normal_log_prob_blobs(params):
      return -0.5 * np.sum(params**2), params
  
file_path: emcee/src/emcee/tests/integration/test_proposal.py
imports: import numpy
  import pytest
  import emcee
label_desc: Use image node_id 1 for calling a global function with example usage: normal_log_prob_blobs(params) and returns: unknown,  params