[🐛 🔨 ] Fixing the GymWrapper Logging issue

[vincentpierre]

Proposed change(s)

Fixing This bug

I made sure mlagents-learn was still printing the right things and made sure importing UnityToGymWrapper did not cause issues :

This code :

import logging
import sys

from gym_unity.envs import UnityToGymWrapper

def create_logger(name, loglevel):
    logger = logging.getLogger(name)
    logger.setLevel(loglevel)
    handler = logging.StreamHandler(stream=sys.stdout)
    formatter = logging.Formatter(fmt=f'%(asctime)s - {name} - %(message)s', datefmt='%d/%m/%Y %H:%M:%S')
    handler.setFormatter(formatter)
    logger.addHandler(handler)
    return logger

if __name__ == "__main__":
    logger = create_logger(name="USER LOGGER", loglevel=logging.INFO)
    for i in range(10):
        logger.info(f"i={i}")

Now prints to console only once per logger.info calls.

Useful links (Github issues, JIRA tickets, ML-Agents forum threads etc.)

Types of change(s)

• Bug fix
• New feature
• Code refactor
• Breaking change
• Documentation update
• Other (please describe)

Checklist

• Added tests that prove my fix is effective or that my feature works
• Updated the changelog (if applicable)
• Updated the documentation (if applicable)
• Updated the migration guide (if applicable)

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