SyntaxError: invalid syntax while i Test on the validation split:

[miaozujia]

my environment: ubuntu18.04 python3.5 and i have two question:
1,I configure the virtual environment pointgnn according to your guide, and i am successfully achieve.
However, python report an error: as follow after running the command:python3 run.py checkpoints/car_auto_T3_train/ --dataset_root_dir dataset --output_dir output/

2,i run the command: pip3 install --user tensorflow-gpu==1.15.0 and it succesfully ,however i can see tensorflow in conda list.

QUESTION 1

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(pointgnn) siat@siat-Precision-3640-Tower:~/work/machine_learning/Point-GNN-master$ python3 run.py checkpoints/car_auto_T3_train/ --dataset_root_dir dataset --output_dir output/
Traceback (most recent call last):
File "run.py", line 11, in
import open3d
File "/home/siat/.local/lib/python3.5/site-packages/open3d/init.py", line 52, in
from open3d.j_visualizer import *
File "/home/siat/.local/lib/python3.5/site-packages/open3d/j_visualizer.py", line 27, in
import ipywidgets as widgets
File "/home/siat/.local/lib/python3.5/site-packages/ipywidgets/init.py", line 25, in
from .widgets import *
File "/home/siat/.local/lib/python3.5/site-packages/ipywidgets/widgets/init.py", line 4, in
from .widget import Widget, CallbackDispatcher, register, widget_serialization
File "/home/siat/.local/lib/python3.5/site-packages/ipywidgets/widgets/widget.py", line 19, in
from ipykernel.comm import Comm
File "/home/siat/.local/lib/python3.5/site-packages/ipykernel/init.py", line 2, in
from .connect import *
File "/home/siat/.local/lib/python3.5/site-packages/ipykernel/connect.py", line 16, in
import jupyter_client
File "/home/siat/.local/lib/python3.5/site-packages/jupyter_client/init.py", line 6, in
from .asynchronous import AsyncKernelClient # noqa
File "/home/siat/.local/lib/python3.5/site-packages/jupyter_client/asynchronous/init.py", line 1, in
from .client import AsyncKernelClient # noqa
File "/home/siat/.local/lib/python3.5/site-packages/jupyter_client/asynchronous/client.py", line 6, in
from jupyter_client.channels import HBChannel
File "/home/siat/.local/lib/python3.5/site-packages/jupyter_client/channels.py", line 47
time_to_dead: float = 1.0
^
SyntaxError: invalid syntax

QUESTION 2 CONDA LIST

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(pointgnn) siat@siat-Precision-3640-Tower:~/work/machine_learning/Point-GNN-master$ conda list
packages in environment at /home/siat/Downloads/ENTER/envs/pointgnn:

Name Version Build Channel
_libgcc_mutex 0.1 main https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
_openmp_mutex 5.1 1_gnu https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
ca-certificates 2022.07.19 h06a4308_0 https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
certifi 2020.6.20 pyhd3eb1b0_3 https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
libffi 3.3 he6710b0_2 https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
libgcc-ng 11.2.0 h1234567_1 https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
libgomp 11.2.0 h1234567_1 https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
libstdcxx-ng 11.2.0 h1234567_1 https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
ncurses 6.3 h5eee18b_3 https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
openssl 1.1.1q h7f8727e_0 https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
pip 20.3.4 pypi_0 pypi
protobuf 3.17.3 pypi_0 pypi
python 3.5.6 h12debd9_1 https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
readline 8.1.2 h7f8727e_1 https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
setuptools 50.3.2 pypi_0 pypi
sqlite 3.39.2 h5082296_0 https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
tk 8.6.12 h1ccaba5_0 https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
wheel 0.37.1 pyhd3eb1b0_0 https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main
xz 5.2.5 h7f8727e_1 https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/main