1  from typing import Callable
 2  
 3  from evidently.guardrails.core import GuardException
 4  from evidently.guardrails.core import GuardrailBase
 5  
 6  
 7  class PythonFunction(GuardrailBase):
 8      def __init__(self, function: Callable[[str], bool]):
 9          super().__init__()
10          self.function = function
11  
12      def name(self) -> str:
13          return f"python_function_{self.function.__name__}"
14  
15      def validate(self, data: str):
16          if self.function(data):
17              return
18          raise GuardException(self)