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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def to_python(self, value):
 """ Validates that the input can be converted to a time. Returns a Python datetime.time object. """

        if value in validators.EMPTY_VALUES:
            return None
        if isinstance(value, datetime.datetime):
            return value.time()
        if isinstance(value, datetime.time):
            return value
        if isinstance(value, list):
            # Input comes from a 2 SplitTimeWidgets, for example. So, it's two
            # components: start time and end time.
            if len(value) != 2:
                raise ValidationError(self.error_messages['invalid'])
            if value[0] in validators.EMPTY_VALUES and value[1] in \
                    validators.EMPTY_VALUES:
                return None

            start_value = value[0]
            end_value = value[1]

        start_time = None
        end_time = None

        for format in self.input_formats or formats.get_format(\
                'TIME_INPUT_FORMATS'):
            try:
                start_time = datetime.datetime(
                    *time.strptime(start_value, format)[:6]
                ).time()
            except ValueError:
                if start_time:
                    continue
                else:
                    raise ValidationError(self.error_messages['invalid'])

        for format in self.input_formats or formats.get_format(\
                'TIME_INPUT_FORMATS'):
            try:
                end_time = datetime.datetime(
                    *time.strptime(end_value, format)[:6]
                ).time()
            except ValueError:
                if end_time:
                    continue
                else:
                    raise ValidationError(self.error_messages['invalid'])

        return (start_time, end_time)