Recently I came across logging in python.
I have the following code in test.py file
import logging
logger = logging.getLogger(__name__)
logger.setLevel(logging.DEBUG)
logger.addHandler(logging.StreamHandler())
logger.debug("test Message")
Now, is there any way I can print the resulting Logrecord object generated by logger.debug("test Message") because it's stated in the documentation that
LogRecord instances are created automatically by the Logger every time something is logged
https://docs.python.org/3/library/logging.html#logrecord-objects
I checked saving debug into a variable and print it
test = logger.debug("test Message")
print(test)
the output is NONE
My goal is to check/view the final Logrecord object generated by logging.debug(test.py) in the same test.py by using print() This is for my own understanding.
print(LogrecordObject.__dict__)
So how to get hold of the Logrecord object generated by logger.debug("test Message")
A quick way if you just wish to view the LogRecord attributes, you can specify a subset of them as string replacements in a giant string like below.
import logging
view_all_logrecord_attributes = """
asctime - %(asctime)s
created - %(created)f
filename - %(filename)s
funcName - %(funcName)s
levelname - %(levelname)s
levelno - %(levelno)s
lineno - %(lineno)d
message - %(message)s
module - %(module)s
msecs - %(msecs)d
name - %(name)s
pathname - %(pathname)s
process - %(process)d
processName - %(processName)s
relativeCreated - %(relativeCreated)d
thread - %(thread)d
threadName - %(threadName)s
"""
logging.basicConfig(format= view_all_logrecord_attributes, level=logging.DEBUG)
logging.debug('Message text here')
The list is from the documentation: https://docs.python.org/3/library/logging.html#logrecord-attributes
And an example output would be:
asctime - 2024-02-21 08:42:10,428
created - 1708465330.428894
filename - <stdin>
funcName - <module>
levelname - DEBUG
levelno - 10
lineno - 1
message - Message text here
module - <stdin>
msecs - 428
name - root
pathname - <stdin>
process - 94365
processName - MainProcess
relativeCreated - 749
thread - 8042958848
threadName - MainThread