[FIXED] Weird Python Lambda() syntax

Issue

As below, I understand lambda y:... .

But the first Lambda(...) is a function?.

ds = datasets.FashionMNIST(
...
    target_transform=Lambda(lambda y: torch.zeros(10, dtype=torch.float).scatter_(0, torch.tensor(y), value=1))
)

Solution

It's just a function in torchvision for wrapping an arbitrary function as a transform. It's nothing to do with Python syntax, and is spelled Lambda with a capital L instead of lambda to not conflict with the Python keyword.

Answered By - Iguananaut