error in shape net dataloader

[krrishnakumarkp75]

When i try to execute the following line

if torch.cuda.is_available():
device = torch.device("cuda:0")
torch.cuda.set_device(device)
else:
device = torch.device("cpu")

SHAPENET_PATH = '/home/ShapeNetCore'
shapenet_dataset = ShapeNetCore(SHAPENET_PATH)

the following error is coming

---

---

JSONDecodeError Traceback (most recent call last)
in
6
7 SHAPENET_PATH = '/home/ShapeNetCore'
----> 8 shapenet_dataset = ShapeNetCore(SHAPENET_PATH)

~/anaconda3/envs/pytorch3d/lib/python3.8/site-packages/pytorch3d/datasets/shapenet/shapenet_core.py in init(self, data_dir, synsets, version, load_textures, texture_resolution)
63 dict_file = "shapenet_synset_dict_v%d.json" % version
64 with open(path.join(SYNSET_DICT_DIR, dict_file), "r") as read_dict:
---> 65 self.synset_dict = json.load(read_dict)
66 # Inverse dicitonary mapping synset labels to corresponding offsets.
67 self.synset_inv = {label: offset for offset, label in self.synset_dict.items()}

~/anaconda3/envs/pytorch3d/lib/python3.8/json/init.py in load(fp, cls, object_hook, parse_float, parse_int, parse_constant, object_pairs_hook, **kw)
291 kwarg; otherwise JSONDecoder is used.
292 """
--> 293 return loads(fp.read(),
294 cls=cls, object_hook=object_hook,
295 parse_float=parse_float, parse_int=parse_int,

~/anaconda3/envs/pytorch3d/lib/python3.8/json/init.py in loads(s, cls, object_hook, parse_float, parse_int, parse_constant, object_pairs_hook, **kw)
355 parse_int is None and parse_float is None and
356 parse_constant is None and object_pairs_hook is None and not kw):
--> 357 return _default_decoder.decode(s)
358 if cls is None:
359 cls = JSONDecoder

~/anaconda3/envs/pytorch3d/lib/python3.8/json/decoder.py in decode(self, s, _w)
335
336 """
--> 337 obj, end = self.raw_decode(s, idx=_w(s, 0).end())
338 end = _w(s, end).end()
339 if end != len(s):

~/anaconda3/envs/pytorch3d/lib/python3.8/json/decoder.py in raw_decode(self, s, idx)
353 obj, end = self.scan_once(s, idx)
354 except StopIteration as err:
--> 355 raise JSONDecodeError("Expecting value", s, err.value) from None
356 return obj, end

JSONDecodeError: Expecting value: line 7 column 1 (char 6)

---

If some one could help me on how to solve this error it would of great help

Thanks in advance

the full jupyter notebook is like this

import os
import sys
import torch
import json

import pytorch3d
import numpy as np

from pytorch3d.datasets import (
R2N2,
ShapeNetCore,
collate_batched_meshes,
render_cubified_voxels,
)
from pytorch3d.renderer import (
OpenGLPerspectiveCameras,
PointLights,
RasterizationSettings,
TexturesVertex,
look_at_view_transform,
)

from pytorch3d.structures import Meshes
from torch.utils.data import DataLoader

add path for demo utils functions

import sys
import os
sys.path.append(os.path.abspath(''))

from pytorch3d.datasets import (
R2N2,
ShapeNetCore,
collate_batched_meshes,
render_cubified_voxels,
)
from pytorch3d.renderer import (
OpenGLPerspectiveCameras,
PointLights,
RasterizationSettings,
TexturesVertex,
look_at_view_transform,
)

from pytorch3d.structures import Meshes
from torch.utils.data import DataLoader

add path for demo utils functions

import sys
import os
sys.path.append(os.path.abspath(''))

!wget https://raw.githubusercontent.com/facebookresearch/pytorch3d/master/docs/tutorials/utils/plot_image_grid.py

from plot_image_grid import image_grid

from pytorch3d.utils import all
import bz2

from pytorch3d.datasets import ShapeNetCore

if torch.cuda.is_available():
device = torch.device("cuda:0")
torch.cuda.set_device(device)
else:
device = torch.device("cpu")

SHAPENET_PATH = '/home/ShapeNetCore'
shapenet_dataset = ShapeNetCore(SHAPENET_PATH)

error come after this--

[Jovania]

Helo! In my case it's ok this way
SHAPENET_PATH = "/usr/local/lib/python3.7/dist-packages/pytorch3d/datasets/shapenet"

in this same directory I also copied the shapenet_synset_dict_v1 file.

I am using Colab.

Hope this helps.