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Here's a sample of log records from the logging tutorial:
2005-03-19 15:38:55,977 - simpleExample - DEBUG - debug message 2005-03-19 15:38:55,979 - simpleExample - INFO - info message 2005-03-19 15:38:56,054 - simpleExample - WARNING - warn message 2005-03-19 15:38:56,055 - simpleExample - ERROR - error message 2005-03-19 15:38:56,130 - simpleExample - CRITICAL - critical message This trailing jaggedness annoys me to no end.
I really want to be able to format like this:
2005-03-19 15:38:55,977 - simpleExample - DEBUG - debug message 2005-03-19 15:38:55,979 - simpleExample - INFO - info message 2005-03-19 15:38:56,054 - simpleExample - WARNING - warn message 2005-03-19 15:38:56,055 - simpleExample - ERROR - error message 2005-03-19 15:38:56,130 - simpleExample - CRITICAL - critical message I've attempted the following for my logger, which doesn't work (abbreviated code):
fmt = "{0:>8}" formatter = logging.Formatter("%(asctime)s %(filename)s: " + fmt.format("%(levelname)s") + " %(message)s", "%Y/%m/%d %H:%M:%S") This executes fine and prints the level name as always, but it doesn't implement the width format.
Ex.
logger.debug("testing debug message") logger.info("some random info") logger.critical("oh crap!") Actual result:
2013/12/16 13:43:10 logtester: DEBUG testing debug message 2013/12/16 13:43:10 logtester: INFO some random info 2013/12/16 13:43:10 logtester: CRITICAL oh crap! Desired result:
2013/12/16 13:43:10 logtester: DEBUG testing debug message 2013/12/16 13:43:10 logtester: INFO some random info 2013/12/16 13:43:10 logtester: CRITICAL oh crap! Any hints to implement a fixed width of a field in a logging.Formatter()?
Using Python 2.6.9.
EDIT: second attempt using another method:
formatter = logging.Formatter("%(asctime)s %(filename)s: " + "%(foo)5s" % {"foo" : "(%(levelname)s)"} + " %(message)s", "%Y/%m/%d %H:%M:%S") Still results in:
2013/12/16 13:43:10 logtester: DEBUG testing debug message 2013/12/16 13:43:10 logtester: INFO some random info 2013/12/16 13:43:10 logtester: CRITICAL oh crap! Maybe I'm just doing something boneheaded.
771
Bookmark this question. Show activity on this post. def splitter(str): for i in range(1, len(str)): start = str[0:i] end = str[i:] yield (start, end) for split in splitter(end): result = [start] result.
Propagate: Decides whether a log should be propagated to the logger's parent. By default, its value is True. A level: Like the log handler level, the logger level is used to filter out “less important” logs.
Field width can be specified by adding a number in front of the type specifier:
>>> "%(foo)8s" % {'foo': 'bar'} ' bar' You can use this in your format string passed to the formatter. For your example, that'd be:
"%(asctime)s %(filename)s: %(levelname)8s %(message)s" If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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