[Bug Report] Tianshou tutorials - TypeError: 'int' object is not callable

[RaffaeleGalliera]

Describe the bug

I have just started learning PettingZoo and the Tianshou tutorials code is giving me some problems, I think that the render_mode should be specified when the env is initialized, both in 1_basic_api_usage.py and 3_cli_and_logging.py.
1_basic_api_usage.py:

PettingZoo/tutorials/Tianshou/1_basic_api_usage.py

Lines 18 to 23 in cb39888

	if __name__ == "__main__":
	# Step 1: Load the PettingZoo environment
	env = rps_v2.env()
	# Step 2: Wrap the environment for Tianshou interfacing
	env = PettingZooEnv(rps_v2.env())

3_cli_and_logging.py:

PettingZoo/tutorials/Tianshou/3_cli_and_logging.py

Line 244 in cb39888

env = get_env()

Despite the other tutorials the Tianshou one does not report to be a WIP tutorial and running the code without any changes causes:

pettingzoo/classic/rps/rps.py", line 228, in render
   gymnasium.logger.WARN(
TypeError: 'int' object is not callable

Maybe I am missing something, but all the other tutorials warn of possible bugs, while this one doesn't mention any, so I thought to signal the problem.

Code example

python 1_basic_api_usage.py
python 3_cli_and_logging.py

System info

• Pettingzoo installed via pip
• Version: '1.22.1'
• Ubuntu 22.04
• Python version 3.8.15

Additional context

I will make a PR, in case maintainers would like to consider it for a quick fix.

Checklist

• I have checked that there is no similar issue in the repo