I met this error when converting my model to torchscript.
RuntimeError: 
iterator expression is expected to be a list, iterable, or range, found value of type 'Tensor':
at /home/dai/scripts/card_ocr_cpu/detector/model_torchscript.py:39:28
def standard_nms(S, thres):
    
    order = torch.argsort(S[:, 8]).flip(0)
    keep:List[int] = []
    while order.size(0) > 0:
        i = order[0]
        keep.append(i.long().item())
        ovr = torch.tensor([intersection(S[i], S[t]) for t in order[1:]])
                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <--- HERE
        inds = torch.where(ovr <= thres)[0]
        order = order[inds + 1]
    return S[keep]
'standard_nms' is being compiled since it was called from 'nms_locality'
at /home/dai/scripts/card_ocr_cpu/detector/model_torchscript.py:63:11
            p = weighted_merge(g, p)
        else:  
            if p.size(0) > 1:
                S.append(p)
            p = g
    if p is not None:
        S.append(p)
    if len(S) == 0:
        return torch.tensor([0])
    return standard_nms(torch.stack(S), thres)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <--- HERE
'nms_locality' is being compiled since it was called from 'get_boxes_torch'
at /home/dai/scripts/card_ocr_cpu/detector/model_torchscript.py:247:4
        return None
    boxes = torch.zeros((polys_restored.shape[0],9)).float()
    boxes[:,:8] = polys_restored
    xs = xy_text[index,0]
    ys = xy_text[index,1]
    boxes[:,8] = score[xs,ys]
    
    boxes = nms_locality(boxes,nms_thresh)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <--- HERE
    return boxes
'get_boxes_torch' is being compiled since it was called from '__torch__.EAST.forward'
at /home/dai/scripts/card_ocr_cpu/detector/model_torchscript.py:216:12
    def forward(self, x, train:bool=False):
        x1,x2,x3,x4 = self.extractor(x)
        x = self.merge(x1,x2,x3,x4)

        # del x1,x2,x3,x4
        # collect()

        score,geo = self.output(x)
        if not train:
            boxes = get_boxes_torch(score,geo,score_thresh=0.95,nms_thresh=0.2)
            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <--- HERE

            return boxes
        return score,geo

How can I  iterate through the tensor like a list. Looking forward for your replay.