title: Weird Python Lambda() syntax
body: <p>As below, I understand <strong>lambda y:...</strong> .</p>
  <p>But the first <strong>Lambda(...)</strong> is a function?.</p>
  <pre><code>ds = datasets.FashionMNIST(
  ...
      target_transform=Lambda(lambda y: torch.zeros(10, dtype=torch.float).scatter_(0, torch.tensor(y), value=1))
  )
  </code></pre>