def fail(self, msg, lineno):
        """Fail with a :exc:`TemplateAssertionError`."""
        raise TemplateAssertionError(msg, lineno, self.name, self.filename)
def fail ( self , msg , lineno ) : raise TemplateAssertionError ( msg , lineno , self . name , self . filename )
Fail with a :exc:`TemplateAssertionError`.