assignment-a1: fix

mmp/a1/tensors.py

@@ -2,7 +2,7 @@ import torch
 
 
 def avg_color(img: torch.Tensor):
-    return img.mean(dim=(1, 2)).tolist()
+    return img.mean(dim=(1, 2))
 
 
 def mask(foreground: torch.Tensor, background: torch.Tensor, mask_tensor: torch.Tensor, threshold: float):