Greetlist
## What happened ```ping_check``` is not working, no matter I set it to ```int``` or ```bool``` ## Env 1. Ubuntu 20.04 2. Miniconda 23.1.0 3. Base Env: python3.8 ## How I fix it temporarily https://github.com/prprprus/PyMySQLPool/blob/212110afaaa01f1d0d3faa8fe099ad19f48a8fbe/pymysqlpool/pool.py#L179 change ```__ping_check_timestamp``` ==> ```_Pool__ping_check_timestamp``` ## Discussion I do not know why origin code is not working, I also think it it right at first. Maybe it related to Miniconda or Python version?