def __init__(self, suffix=None, filename=None):
        # Initialize environment
        self.suffix = suffix is None and self.suffix_from_filename(filename) \
                                     or suffix
        print(os.path.basename(self.dest_dir) % 'Working environment is %r')
dataset/ETHPy150Open playpauseandstop/tddspry/tests/bootstrap.py/Environment.__init__/swapped operands of `%`