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Solve the following problem using Python, implementing the functions described below, one line at a time
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<USER_TASK:>
Description:
 def validate(self, password, user=None):
 """Validate method, run zxcvbn and check score."""

        user_inputs = []
        if user is not None:
            for attribute in self.user_attributes:
                if hasattr(user, attribute):
                    user_inputs.append(getattr(user, attribute))

        results = zxcvbn(password, user_inputs=user_inputs)
        if results.get('score', 0) < self.min_score:
            feedback = ', '.join(
                results.get('feedback', {}).get('suggestions', []))
            raise ValidationError(_(feedback), code=self.code, params={})