def format_given(self):
        # type: () -> str
        """
        Format the given, non-None attributes for display.
        """
        display_version = None
        if self._given_py_version_info is not None:
            display_version = '.'.join(
                str(part) for part in self._given_py_version_info
            )

        key_values = [
            ('platform', self.platform),
            ('version_info', display_version),
            ('abi', self.abi),
            ('implementation', self.implementation),
        ]
        return ' '.join(
            '{}={!r}'.format(key, value) for key, value in key_values
            if value is not None
        )

        Format the given, non-None attributes for display.
        
product/gradle-plugin/src/main/python/pip/_internal/models/target_python.py