TypeError: Object of type 'Tensor' is not JSON serializable

[yt605155624]

Hello,I run your train.py with GPU and the newest pytorch >>> torch.version '0.4.0a0+5463a4a',THEN I have this problem ,I haven't use pytorch and visdom before ,so I don't know how to fix it ,Could you please help me with this problem?
Traceback (most recent call last):
File "/home/yt/anaconda3/lib/python3.6/site-packages/visdom/init.py", line 261, in _send
data=json.dumps(msg),
File "/home/yt/anaconda3/lib/python3.6/json/init.py", line 231, in dumps
return _default_encoder.encode(obj)
File "/home/yt/anaconda3/lib/python3.6/json/encoder.py", line 199, in encode
chunks = self.iterencode(o, _one_shot=True)
File "/home/yt/anaconda3/lib/python3.6/json/encoder.py", line 257, in iterencode
return _iterencode(o, 0)
File "/home/yt/anaconda3/lib/python3.6/json/encoder.py", line 180, in default
o.class.name)
TypeError: Object of type 'Tensor' is not JSON serializable
(epoch: 1, iters: 300, time: 0.278, data: 0.001) D_A: 0.164 G_A: 0.396 cycle_A: 1.978 idt_A: 1.903 D_B: 0.312 G_B: 0.730 cycle_B: 4.014 idt_B: 0.921
Exception in user code:
Traceback (most recent call last):
File "/home/yt/anaconda3/lib/python3.6/site-packages/visdom/init.py", line 261, in _send
data=json.dumps(msg),
File "/home/yt/anaconda3/lib/python3.6/json/init.py", line 231, in dumps
return _default_encoder.encode(obj)
File "/home/yt/anaconda3/lib/python3.6/json/encoder.py", line 199, in encode
chunks = self.iterencode(o, _one_shot=True)
File "/home/yt/anaconda3/lib/python3.6/json/encoder.py", line 257, in iterencode
return _iterencode(o, 0)
File "/home/yt/anaconda3/lib/python3.6/json/encoder.py", line 180, in default
o.class.name)
TypeError: Object of type 'Tensor' is not JSON serializable
Traceback (most recent call last):
File "train.py", line 35, in
visualizer.display_current_results(model.get_current_visuals(), epoch, save_result)
File "/media/yt/SearchforGraduationDesign/pytorch-CycleGAN-and-pix2pix/util/visualizer.py", line 53, in display_current_results
image_numpy = util.tensor2im(image)
File "/media/yt/SearchforGraduationDesign/pytorch-CycleGAN-and-pix2pix/util/util.py", line 30, in tensor2im
image_numpy = image_tensor[0].cpu().float().numpy()
RuntimeError: Can't call numpy() on Variable that requires grad. Use var.detach().numpy() instead.

[HugoGranstrom]

"Note: The current software works well with PyTorch 0.1-0.3. PyTorch 0.4 support will be added by the end of May."
It currently does not work with Pytorch 0.4, you need to install Pytorch 0.3.1, preferably in a virtual environment so that you can have both versions installed at the same time.

[brando90]

Hello,I run your train.py with GPU and the newest pytorch >>> torch.version '0.4.0a0+5463a4a',THEN I have this problem ,I haven't use pytorch and visdom before ,so I don't know how to fix it ,Could you please help me with this problem?
Traceback (most recent call last):
File "/home/yt/anaconda3/lib/python3.6/site-packages/visdom/init.py", line 261, in _send
data=json.dumps(msg),
File "/home/yt/anaconda3/lib/python3.6/json/init.py", line 231, in dumps
return _default_encoder.encode(obj)
File "/home/yt/anaconda3/lib/python3.6/json/encoder.py", line 199, in encode
chunks = self.iterencode(o, _one_shot=True)
File "/home/yt/anaconda3/lib/python3.6/json/encoder.py", line 257, in iterencode
return _iterencode(o, 0)
File "/home/yt/anaconda3/lib/python3.6/json/encoder.py", line 180, in default
o.class.name)
TypeError: Object of type 'Tensor' is not JSON serializable
(epoch: 1, iters: 300, time: 0.278, data: 0.001) D_A: 0.164 G_A: 0.396 cycle_A: 1.978 idt_A: 1.903 D_B: 0.312 G_B: 0.730 cycle_B: 4.014 idt_B: 0.921
Exception in user code:
Traceback (most recent call last):
File "/home/yt/anaconda3/lib/python3.6/site-packages/visdom/init.py", line 261, in _send
data=json.dumps(msg),
File "/home/yt/anaconda3/lib/python3.6/json/init.py", line 231, in dumps
return _default_encoder.encode(obj)
File "/home/yt/anaconda3/lib/python3.6/json/encoder.py", line 199, in encode
chunks = self.iterencode(o, _one_shot=True)
File "/home/yt/anaconda3/lib/python3.6/json/encoder.py", line 257, in iterencode
return _iterencode(o, 0)
File "/home/yt/anaconda3/lib/python3.6/json/encoder.py", line 180, in default
o.class.name)
TypeError: Object of type 'Tensor' is not JSON serializable
Traceback (most recent call last):
File "train.py", line 35, in
visualizer.display_current_results(model.get_current_visuals(), epoch, save_result)
File "/media/yt/SearchforGraduationDesign/pytorch-CycleGAN-and-pix2pix/util/visualizer.py", line 53, in display_current_results
image_numpy = util.tensor2im(image)
File "/media/yt/SearchforGraduationDesign/pytorch-CycleGAN-and-pix2pix/util/util.py", line 30, in tensor2im
image_numpy = image_tensor[0].cpu().float().numpy()
RuntimeError: Can't call numpy() on Variable that requires grad. Use var.detach().numpy() instead.

did this help? fossasia/visdom#554

[brando90]

Hello,I run your train.py with GPU and the newest pytorch >>> torch.version '0.4.0a0+5463a4a',THEN I have this problem ,I haven't use pytorch and visdom before ,so I don't know how to fix it ,Could you please help me with this problem?
Traceback (most recent call last):
File "/home/yt/anaconda3/lib/python3.6/site-packages/visdom/init.py", line 261, in _send
data=json.dumps(msg),
File "/home/yt/anaconda3/lib/python3.6/json/init.py", line 231, in dumps
return _default_encoder.encode(obj)
File "/home/yt/anaconda3/lib/python3.6/json/encoder.py", line 199, in encode
chunks = self.iterencode(o, _one_shot=True)
File "/home/yt/anaconda3/lib/python3.6/json/encoder.py", line 257, in iterencode
return _iterencode(o, 0)
File "/home/yt/anaconda3/lib/python3.6/json/encoder.py", line 180, in default
o.class.name)
TypeError: Object of type 'Tensor' is not JSON serializable
(epoch: 1, iters: 300, time: 0.278, data: 0.001) D_A: 0.164 G_A: 0.396 cycle_A: 1.978 idt_A: 1.903 D_B: 0.312 G_B: 0.730 cycle_B: 4.014 idt_B: 0.921
Exception in user code:
Traceback (most recent call last):
File "/home/yt/anaconda3/lib/python3.6/site-packages/visdom/init.py", line 261, in _send
data=json.dumps(msg),
File "/home/yt/anaconda3/lib/python3.6/json/init.py", line 231, in dumps
return _default_encoder.encode(obj)
File "/home/yt/anaconda3/lib/python3.6/json/encoder.py", line 199, in encode
chunks = self.iterencode(o, _one_shot=True)
File "/home/yt/anaconda3/lib/python3.6/json/encoder.py", line 257, in iterencode
return _iterencode(o, 0)
File "/home/yt/anaconda3/lib/python3.6/json/encoder.py", line 180, in default
o.class.name)
TypeError: Object of type 'Tensor' is not JSON serializable
Traceback (most recent call last):
File "train.py", line 35, in
visualizer.display_current_results(model.get_current_visuals(), epoch, save_result)
File "/media/yt/SearchforGraduationDesign/pytorch-CycleGAN-and-pix2pix/util/visualizer.py", line 53, in display_current_results
image_numpy = util.tensor2im(image)
File "/media/yt/SearchforGraduationDesign/pytorch-CycleGAN-and-pix2pix/util/util.py", line 30, in tensor2im
image_numpy = image_tensor[0].cpu().float().numpy()
RuntimeError: Can't call numpy() on Variable that requires grad. Use var.detach().numpy() instead.

did this help? fossasia/visdom#554

If like me you just wanted to save the dict of tensors in a human readable way check this out:

https://discuss.pytorch.org/t/typeerror-tensor-is-not-json-serializable/36065/3 or https://stackoverflow.com/questions/12943819/how-to-prettyprint-a-json-file/66180687#66180687.