code: def test_issue664_alt():
      test = pd.DataFrame([np.nan] * 100, columns=["a"])
  
      profile = ProfileReport(test)
      assert len(profile.to_html()) > 0
  
imports: import numpy
  import pandas
  from ydata_profiling import ProfileReport
label_desc: Use image node_id 2 for calling a global function with example usage: test_issue664_alt() without return types