Update __init__.py

Author: rich-iannone

sweet/__init__.py

@@ -8,8 +8,8 @@
 __all__ = ["__version__", "__author__", "__email__"]
 
 try:
-    from .core.transforms import TransformStep
-    from .core.workbook import Sheet, Workbook
+    from .core.transforms import TransformStep  # noqa: F401
+    from .core.workbook import Sheet, Workbook  # noqa: F401
 
     __all__.extend(["TransformStep", "Sheet", "Workbook"])
 except ImportError: