title: Pytorch: torch.int32 to torch.long
body: <p>I'm new in stackoverflow, hope this post respects all the requirements.</p>
  <p>As in the tile, I was wondering how to change the type of a data from torch.int32 to torch.long, as I obtain this error in my code:</p>
  <p>ValueError: Argument <code>edge_index</code> needs to be of type <code>torch.long</code> but found type <code>torch.int32</code>.</p>
  <p>Thank you in advance.</p>