@classmethod
    def _field_dupe_warning(metacls, name, fields):
        warnings.warn(
            "{schema}: Duplicate field definition for field{plural} {field}"
                .format(
                    schema=name,
                    field=fields,
                    plural="s" if 1 > len(fields) else ""
                ),
            stacklevel=4
        )
dataset/ETHPy150Open spotify/pyschema/pyschema/core.py/PySchema._field_dupe_warning/swapped operands of `>`