---------------------------------------------------------------------------
RuntimeError                              Traceback (most recent call last)
<ipython-input-9-039a3f3ae91a> in <module>()
----> 1 b[:,:5]

/Users/soumith/anaconda/lib/python2.7/site-packages/torch/autograd/variable.pyc in __getitem__(self, key)
     55         if isinstance(key, Variable) and isinstance(key.data, torch.ByteTensor):
     56             return MaskedSelect()(self, key)
---> 57         return Index(key)(self)
     58 
     59     # TODO: setitem

/Users/soumith/anaconda/lib/python2.7/site-packages/torch/autograd/function.pyc in __call__(self, *input)
     16 
     17     def __call__(self, *input):
---> 18         return self._do_forward(*input)
     19 
     20     def save_for_backward(self, *tensors):

/Users/soumith/anaconda/lib/python2.7/site-packages/torch/autograd/function.pyc in _do_forward(self, *input)
     48             self.previous_functions = [(arg.creator or arg, id(arg)) for arg in input]
     49 
---> 50         raw_output = self.forward(*unpacked_input)
     51         if not isinstance(raw_output, tuple):
     52             raw_output = (raw_output,)

/Users/soumith/anaconda/lib/python2.7/site-packages/torch/autograd/functions/tensor.pyc in forward(self, i)
     15     def forward(self, i):
     16         self.input_size = i.size()
---> 17         return i[self.index]
     18 
     19     def backward(self, grad_output):

RuntimeError: indexing a tensor with an object of type tuple. The only supported types are integers, slices and torch.ByteTensor