Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

[BUG] Should RichHandler default to stderr

See original GitHub issue

Describe the bug

“Bug” is a little strong, but I noticed that by default Python logging writes to stderr, but when using RichHandler by default it writes to stdout.

I know you can get around this with something like:

logging.basicConfig(
    level="DEBUG", datefmt="[%X]", handlers=[RichHandler(console=Console(stderr=True))]
)

But would it be more sensible and less surprising for new users if by default RichHandler logged to stderr?

Issue Analytics

State:
Created 2 years ago
Reactions:1
Comments:7

Top GitHub Comments

1reaction

robinbowescommented, Nov 18, 2022

I also think that the RichHandler should not change default logger behaviour, ie. it should log to stderr by default.

It would be surprising for some users if they piped the output and it didn’t appear

Anyone using RichHandler is already using python logging, and therefore expecting log output to go to stderr. It is more surprising for logging to not go to stderr.

This is a bug, IMO.

0reactions

imdoroshenkocommented, Aug 23, 2022

This bug caused issues in my CLI app because logs were mixed with the app output and caused errors when piping. I feel that by default rich should avoid unexpected behaviour.

Top Results From Across the Web

Why Python logging writes to stderr by default? - Stack Overflow

The reason for that is stderr is meant to be an output for all messages that are just some internal and/or debugging program...

Logging Handler — Rich 12.6.0 documentation

Rich supplies a logging handler which will format and colorize text written by Python's logging module. Here's an example of how to set...

https://raw.githubusercontent.com/willmcgugan/rich...

\_lru_cache ### Changed - Default width of Jupyter console size is ... docs for RichHandler which erroneously said default console writes to stderr...

How to Enhance Nmap with Python - freeCodeCamp

Write a small script that can scan all the hosts on the local ... 2600]$ sudo -l Matching Defaults entries for josevnz on...

python39-rich-12.5.1-1.1.noarch RPM

StringIO file (for example) then the width will be set to the current terminal dimensions and not a default of 80. Added *...