Description
Hi @Delgan ,
Thanks for the great package! I'm swapping from the core logging package to loguru in a python package I am developing. In general the swap has been really easy - but I'm having a problem with warnings/error messages.
I have made a minimal example of the conversion I am trying to make and the log outputs. From the logging package:
import logging
def make_logging_warnings():
logging.basicConfig(filename="output.log",
format='%(asctime)s %(name)-12s %(levelname)-8s %(message)s',
level=logging.INFO)
logger = logging.getLogger()
logger.info("Let's start logging")
try:
raise UserWarning("I'm warning you!")
except UserWarning:
logger.warning('Warning encountered in function:', exc_info=True)
make_logging_warnings()
Which returns the following log:
2019-01-09 12:37:55,666 root INFO Let's start logging
2019-01-09 12:37:55,666 root WARNING Warning encountered in function:
Traceback (most recent call last):
File "<ipython-input-1-59e413187e43>", line 12, in make_logging_warnings
raise UserWarning("I'm warning you!")
UserWarning: I'm warning you!
Converting this into loguru the warning traceback doesn't seem to work:
from loguru import logger
def make_loguru_warnings():
logger.add("output.log", level='INFO')
logger.info("Let's start logging")
try:
raise UserWarning("I'm warning you!")
except UserWarning:
logger.warning('Warning encountered in function:', exc_info=True)
make_loguru_warnings()
I get the output:
2019-01-09 12:40:17.751 | INFO | __main__:make_loguru_warnings:6 - Let's start logging
2019-01-09 12:40:17.754 | WARNING | __main__:make_loguru_warnings:10 - Warning encountered in function:
See how I'm missing the traceback here?
I have a similar issue with errors, but they're giving too much information back in loguru - I think this is to do with better_exceptions, can this be turned off?
To make the above code work for errors I have just changed:
UserWarning("I'm warning you!")toAssertionError("You're not assertive!")logger.warning("Warning encountered in function: ", exc_info=True)tologger.exception("Error encountered in function: ")
I get the following logs for both packages:
From logging
2019-01-09 12:44:06,843 root INFO Let's start logging
2019-01-09 12:44:06,843 root ERROR Error encountered in function:
Traceback (most recent call last):
File "<ipython-input-2-759d24f4d830>", line 9, in make_logging_errors
raise AssertionError("You're not assertive")
AssertionError: You're not assertive
From loguru
2019-01-09 12:45:36.377 | INFO | __main__:make_loguru_errors:6 - Let's start logging
2019-01-09 12:45:36.379 | ERROR | __main__:make_loguru_errors:10 - Error encountered in function:
Traceback (most recent call last):
File "C:\Users\kmarks\AppData\Local\Continuum\miniconda3\envs\cm\Scripts\ipython-script.py", line 10, in <module>
sys.exit(start_ipython())
| | -> <function start_ipython at 0x00000181A3133598>
| -> <built-in function exit>
-> <module 'sys' (built-in)>
File "C:\Users\kmarks\AppData\Local\Continuum\miniconda3\envs\cm\lib\site-packages\IPython\__init__.py", line 125, in start_ipython
return launch_new_instance(argv=argv, **kwargs)
| | | -> {}
| | -> None
| -> None
-> <bound method Application.launch_instance of <class
.... + loads more lines .....
File "<ipython-input-3-e3410db626c5>", line 12, in <module>
make_loguru_errors()
-> <function make_loguru_errors at 0x00000181A3DEA0D0>
> File "<ipython-input-3-e3410db626c5>", line 8, in make_loguru_errors
raise AssertionError("You're not assertive")
-> <class 'AssertionError'>
AssertionError: You're not assertive
I see information on using the backtrace=True/False argument, but that still gives much more information on the error than I am looking for. I am guessing the error problem is to do with better_exceptions? I'm not sure about the warning one. I would really appreciate some help with this.
Thanks!