def perturb()

in src/fmeval/transforms/semantic_perturbations.py [0:0]

• 10 lines of code
• 4 McCabe index (conditional complexity)

    def perturb(self, text: str) -> List[str]:
        """Return a list where each element is a copy of the original text with a fraction of characters capitalized.

        :param text: The input text to be perturbed.
        :returns: A list of perturbed text outputs.
        """

        def random_uppercase_text():
            """Return a copy of `text` where a fraction of the characters are converted to uppercase.

            :returns: A copy of `text` where a fraction of the characters are converted to uppercase.
            """
            positions = self.rng.choice(
                range(len(text)),
                int(len(text) * self.uppercase_fraction),
                False,
            )
            new_text = [letter if index not in positions else letter.upper() for index, letter in enumerate(text)]
            return "".join(new_text)

        return [random_uppercase_text() for _ in range(self.num_perturbations)]