Remove unused f-string
@@ -189,7 +189,7 @@ def affine_transformation(data,
output = cupy.zeros(output_shape, dtype=output)
elif isinstance(output, cupy.ndarray):
if output.shape != output_shape:
- raise ValueError(f'Output shapes do not match')
+ raise ValueError('Output shapes do not match')
else:
raise ValueError('Output must be None, cupy.ndarray or cupy.dtype')
