code: def test_is_valid_email(self):
      assert Anonymizer._is_valid_email("john.doe@gmail.com") is True
      assert Anonymizer._is_valid_email("john.doe@gmail") is False
  
file_path: pandas-ai/tests/helpers/test_anonymizer.py
imports: import pandas
  from pandasai.helpers.anonymizer import Anonymizer
label_desc: Use image node_id 1 for calling the TestAnonymizeDataFrameHead obj's underlying member method code with example usage: obj.test_is_valid_email() without return types