code: def test__formatter_float():
      assert _formatter(np.float32(0.81342537)) == "0.813"
  
file_path: imagededup/tests/test_plotter.py
imports: import os
  import pytest
  import matplotlib.pyplot
  from pathlib import Path
  import numpy
  from imagededup.utils.plotter import _formatter, _validate_args, plot_duplicates
label_desc: Use image node_id 1 for calling a global function with example usage: test__formatter_float() without return types