code: def test_pass():
      sr.fit(X[:, :2], y)
      plot_decision_regions(X=X[:, :2], y=y, clf=sr)
  
file_path: mlxtend/mlxtend/plotting/tests/test_decision_regions.py
imports: import matplotlib.pyplot
  import numpy
  from mlxtend.classifier import SoftmaxRegression
  from mlxtend.data import iris_data
  from mlxtend.plotting import plot_decision_regions
  from mlxtend.utils import assert_raises
label_desc: Use image node_id 1 for calling a global function with example usage: test_pass() without return types