Not able to run pre-trained model

[yuanzhanghu]

Both python2 and python3 were not working:
yhu@yhu-Aspire-M3920:$ python -m baselines.deepq.experiments.atari.enjoy --model-dir /tmp/models/model-atari-duel-pong-1 --env Pong --dueling
Traceback (most recent call last):
File "/usr/lib/python2.7/runpy.py", line 163, in _run_module_as_main
mod_name, _Error)
File "/usr/lib/python2.7/runpy.py", line 102, in _get_module_details
loader = get_loader(mod_name)
File "/usr/lib/python2.7/pkgutil.py", line 464, in get_loader
return find_loader(fullname)
File "/usr/lib/python2.7/pkgutil.py", line 474, in find_loader
for importer in iter_importers(fullname):
File "/usr/lib/python2.7/pkgutil.py", line 430, in iter_importers
import(pkg)
File "/home/yhu/.local/lib/python2.7/site-packages/baselines/deepq/init.py", line 4, in
from baselines.deepq.simple import learn, load # noqa
File "/home/yhu/.local/lib/python2.7/site-packages/baselines/deepq/simple.py", line 10, in
from baselines import logger
File "/home/yhu/.local/lib/python2.7/site-packages/baselines/logger.py", line 139
def log(*args, level=INFO):
^
SyntaxError: invalid syntax
yhu@yhu-Aspire-M3920:$ python3 -m baselines.deepq.experiments.atari.enjoy --model-dir /tmp/models/model-atari-duel-pong-1 --env Pong --dueling
Traceback (most recent call last):
File "/usr/lib/python3.5/runpy.py", line 184, in _run_module_as_main
"main", mod_spec)
File "/usr/lib/python3.5/runpy.py", line 85, in _run_code
exec(code, run_globals)
File "/home/yhu/.local/lib/python3.5/site-packages/baselines/deepq/experiments/atari/enjoy.py", line 15, in
from baselines.common.atari_wrappers_deprecated import wrap_dqn
File "/home/yhu/.local/lib/python3.5/site-packages/baselines/common/atari_wrappers_deprecated.py", line 1, in
import cv2
ImportError: No module named 'cv2'
yhu@yhu-Aspire-M3920:~$

[abhibhav14]

Like the error message clearly points out, you need opencv.
Run pip install opencv-python and it should work

[yuanzhanghu]

Thanks. I was thinking that only opencv3 can be installed in python3.
It worked eventually, after installing several dependencies:
sudo apt install cmake;
sudo pip3 install gym[atari]
sudo pip3 install opencv-python