Custom anonymizer with lambda type (#654)

docs/samples/python/example_custom_lambda_anonymizer.py

@@ -0,0 +1,40 @@
+from presidio_analyzer import AnalyzerEngine
+from presidio_anonymizer import AnonymizerEngine
+from presidio_anonymizer.entities.engine.operator_config import OperatorConfig
+from faker import Faker
+from faker.providers import internet
+
+def reverse_string(x):
+  return x[::-1]
+
+def anonymize_reverse_lambda(analyzer_results, text_to_anonymize):         
+    anonymized_results = anonymizer.anonymize(
+        text=text_to_anonymize,
+        analyzer_results=analyzer_results,            
+        operators={"EMAIL_ADDRESS": OperatorConfig("custom", {"lambda": lambda x: x[::-1]})}        
+    )
+
+    return anonymized_results
+
+def anonymize_faker_lambda(analyzer_results, text_to_anonymize):      
+    anonymized_results = anonymizer.anonymize(
+        text=text_to_anonymize,
+        analyzer_results=analyzer_results,    
+        operators={"EMAIL_ADDRESS": OperatorConfig("custom", {"lambda": lambda x: fake.safe_email()})}
+    )
+
+    return anonymized_results
+
+fake = Faker('en_US')
+fake.add_provider(internet)
+
+analyzer = AnalyzerEngine()
+anonymizer = AnonymizerEngine()
+
+text = 'The user has the following two emails: email1@contoso.com and email2@contoso.com'
+analyzer_results = analyzer.analyze(text=text, entities=["EMAIL_ADDRESS"], language='en')
+print("Origina Text: ", text)
+print("Analyzer result:", analyzer_results, '\n')
+
+print("Reverse lambda result: ",anonymize_reverse_lambda(analyzer_results, text).text, '\n')
+print("Faker lambda result: ",anonymize_faker_lambda(analyzer_results, text).text, '\n')