code: def forward(self, x):
      assert isinstance(x, torch.Tensor)
      return einops.rearrange(x, self.rearrange_expr, **self.kwargs)
  
imports: import einops
  import numpy
  import torch
  import torch.nn
label_desc: Use image node_id 2 for calling the EinOpsRearrange obj's underlying member method code with example usage: obj.forward(x) and returns: einops