remove all the print() statements and use some form of logging instead

[chennnuo]

The following functions have been modified:

• plot.py
• test.py
• train.py
• tutorials/1-Introduction/China_A_share_market_tushare.py
• tutorials/2-Advance/Crypto_Feature_Importance.py
• tutorials/2-Advance/FinRL_PortfolioAllocation_Explainable_DRL.py
• tutorials/2-Advance/execution_optimizing.py
• tutorials/2-Advance/nas100_gpu_podracer.py
• tutorials/2-Advance/stock_jq.py

[zhumingpassional]

the following can be written a function?
logger = logging.getLogger()
logger.setLevel("DEBUG")
file_handler = logging.FileHandler("./log.txt", mode="a", encoding="utf-8")
file_handler.setLevel("DEBUG")
file_handler.setFormatter(
logging.Formatter(fmt="%(lineno)s---%(asctime)s---%(message)s")
)
logger.addHandler(file_handler)

[zhumingpassional]

have you revised all print() to logging?

[chennnuo]

have you revised all print() to logging?

I have checked all run files at present, and I will continue to check other files in the package later.

[chennnuo]

Thanks for your advice. I'm doing this, I have a question, which folder would be more appropriate for the "log" function to be placed? meta? Or create a new folder, like utils?

[zhumingpassional]

i prefer creating a log folder.

[hawkeye-bot]

Good step to replace all the print functions by logging-statements!

May I suggest 2 changes to the logging stuff?

1. place the log initialization in a generic function somewhere as @zhumingpassional suggests
2. load log configuration from a logging file (example code below). This allows for easy modification to the log setup, without having to modify the code itself. Just a suggestion :)

with open(args.logging_config_file, 'rt') as file: logging_config = yaml.safe_load(file.read()) try: logging_config['handlers']['file_handler']['filename'] = args.logfile except Exception: pass # just ignore it logging.config.dictConfig(logging_config)

[zhumingpassional]

@hoeckxer good suggestions. thanks. glad to work with you.

@chennnuo pls revise it as the above suggestions. thanks.

[eyast]

Hey guys how about using a log Decorator?

https://ankitbko.github.io/blog/2021/04/logging-in-python/

[chennnuo]

Thank you very much for everyone's suggestions, I will take your suggestions seriously to revise and improve!

[zhumingpassional]

Hey guys how about using a log Decorator?

https://ankitbko.github.io/blog/2021/04/logging-in-python/

@eyast impressive idea.

@chennnuo
you do not need to close it.
you can revise PR locally and push it again.

[chennnuo]

Oh sorry, I'll reopen it right away, revise PR locally and push it again as soon as I'm done modifying and testing.

[YangletLiu]

@chennnuo Just to check that this is fixed in the PR #195
right? Do we need a further operation?

[chennnuo]

@XiaoYangLiu-FinRL Sorry, I haven't finished fixing it yet, I'll fix it soon and let you know.

[YangletLiu]

@chennnuo No problem. Remember to use the most updated branch, to avoid conflict. Thanks.

[chennnuo]

@XiaoYangLiu-FinRL Ok thanks for the heads up, I'll keep an eye on that.