def __init__(self, db_file=None):
if not db_file:
- db_file = os.path.join(os.environ.get('MATRIX_DATA_DIR'), 'chores.db')
+ db_file = os.path.join(os.environ.get('MATRIX_DATA_DIR', ''), 'chores.db')
self.file = db_file
self.engine = self.get_engine()