Why is the Google Cloud Python library adding redundant logging?











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During from google.cloud import pubsub_v1, the Google library adds a StreamHandler to the root logger.



This means that with my own logger, each line appears twice.



INFO:thelogger:Retrieving result for miqxxgcfuv, status Pending
2018-11-18 21:17:22;INFO;Retrieving result for miqxxgcfuv, status Pending


Setting the handlers= on the root logger resolves this, but then various libraries including the Google libraries do not log at all, and I do want their logs.










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  • How are you creating your logger? Possible you're using the default configuration and then adding an additional handler on top.
    – n8sty
    yesterday










  • I am creating it with the ordinary constructor logging.getLogger("thelogger"). You say "using the default configuration" -- how do I avoid that?
    – Joshua Fox
    yesterday










  • You're almost definitely adding multiple handlers. Running import logging; logger=logging.getLogger('thelogger'); logger.addHandler(logging.StreamHandler()); logger.setLevel(logging.INFO); logger.warning('hi') returns hi. If you run that same command twice, the second invocation will print hi to the console twice. The order in which a logger is created matters so it's hard to say exactly why you're getting what you're getting without you showing what you're doing.
    – n8sty
    yesterday










  • In the line after the double-logging thelogger.info("xxx), I tried print(thelogger.handlers). It shows "[<StreamHandler <stdout> (INFO)>]" -- in other words, only one Handler. But note -- this occurs under Flask [edited main body]. When I run, e.g. a unittest, I don't get this doubling
    – Joshua Fox
    yesterday










  • I narrowed this down to a Google library. See body. But I still don't know how to avoid it.
    – Joshua Fox
    yesterday















up vote
1
down vote

favorite












During from google.cloud import pubsub_v1, the Google library adds a StreamHandler to the root logger.



This means that with my own logger, each line appears twice.



INFO:thelogger:Retrieving result for miqxxgcfuv, status Pending
2018-11-18 21:17:22;INFO;Retrieving result for miqxxgcfuv, status Pending


Setting the handlers= on the root logger resolves this, but then various libraries including the Google libraries do not log at all, and I do want their logs.










share|improve this question
























  • How are you creating your logger? Possible you're using the default configuration and then adding an additional handler on top.
    – n8sty
    yesterday










  • I am creating it with the ordinary constructor logging.getLogger("thelogger"). You say "using the default configuration" -- how do I avoid that?
    – Joshua Fox
    yesterday










  • You're almost definitely adding multiple handlers. Running import logging; logger=logging.getLogger('thelogger'); logger.addHandler(logging.StreamHandler()); logger.setLevel(logging.INFO); logger.warning('hi') returns hi. If you run that same command twice, the second invocation will print hi to the console twice. The order in which a logger is created matters so it's hard to say exactly why you're getting what you're getting without you showing what you're doing.
    – n8sty
    yesterday










  • In the line after the double-logging thelogger.info("xxx), I tried print(thelogger.handlers). It shows "[<StreamHandler <stdout> (INFO)>]" -- in other words, only one Handler. But note -- this occurs under Flask [edited main body]. When I run, e.g. a unittest, I don't get this doubling
    – Joshua Fox
    yesterday










  • I narrowed this down to a Google library. See body. But I still don't know how to avoid it.
    – Joshua Fox
    yesterday













up vote
1
down vote

favorite









up vote
1
down vote

favorite











During from google.cloud import pubsub_v1, the Google library adds a StreamHandler to the root logger.



This means that with my own logger, each line appears twice.



INFO:thelogger:Retrieving result for miqxxgcfuv, status Pending
2018-11-18 21:17:22;INFO;Retrieving result for miqxxgcfuv, status Pending


Setting the handlers= on the root logger resolves this, but then various libraries including the Google libraries do not log at all, and I do want their logs.










share|improve this question















During from google.cloud import pubsub_v1, the Google library adds a StreamHandler to the root logger.



This means that with my own logger, each line appears twice.



INFO:thelogger:Retrieving result for miqxxgcfuv, status Pending
2018-11-18 21:17:22;INFO;Retrieving result for miqxxgcfuv, status Pending


Setting the handlers= on the root logger resolves this, but then various libraries including the Google libraries do not log at all, and I do want their logs.







python logging google-cloud-platform google-cloud-pubsub






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edited 7 hours ago

























asked yesterday









Joshua Fox

7,65595076




7,65595076












  • How are you creating your logger? Possible you're using the default configuration and then adding an additional handler on top.
    – n8sty
    yesterday










  • I am creating it with the ordinary constructor logging.getLogger("thelogger"). You say "using the default configuration" -- how do I avoid that?
    – Joshua Fox
    yesterday










  • You're almost definitely adding multiple handlers. Running import logging; logger=logging.getLogger('thelogger'); logger.addHandler(logging.StreamHandler()); logger.setLevel(logging.INFO); logger.warning('hi') returns hi. If you run that same command twice, the second invocation will print hi to the console twice. The order in which a logger is created matters so it's hard to say exactly why you're getting what you're getting without you showing what you're doing.
    – n8sty
    yesterday










  • In the line after the double-logging thelogger.info("xxx), I tried print(thelogger.handlers). It shows "[<StreamHandler <stdout> (INFO)>]" -- in other words, only one Handler. But note -- this occurs under Flask [edited main body]. When I run, e.g. a unittest, I don't get this doubling
    – Joshua Fox
    yesterday










  • I narrowed this down to a Google library. See body. But I still don't know how to avoid it.
    – Joshua Fox
    yesterday


















  • How are you creating your logger? Possible you're using the default configuration and then adding an additional handler on top.
    – n8sty
    yesterday










  • I am creating it with the ordinary constructor logging.getLogger("thelogger"). You say "using the default configuration" -- how do I avoid that?
    – Joshua Fox
    yesterday










  • You're almost definitely adding multiple handlers. Running import logging; logger=logging.getLogger('thelogger'); logger.addHandler(logging.StreamHandler()); logger.setLevel(logging.INFO); logger.warning('hi') returns hi. If you run that same command twice, the second invocation will print hi to the console twice. The order in which a logger is created matters so it's hard to say exactly why you're getting what you're getting without you showing what you're doing.
    – n8sty
    yesterday










  • In the line after the double-logging thelogger.info("xxx), I tried print(thelogger.handlers). It shows "[<StreamHandler <stdout> (INFO)>]" -- in other words, only one Handler. But note -- this occurs under Flask [edited main body]. When I run, e.g. a unittest, I don't get this doubling
    – Joshua Fox
    yesterday










  • I narrowed this down to a Google library. See body. But I still don't know how to avoid it.
    – Joshua Fox
    yesterday
















How are you creating your logger? Possible you're using the default configuration and then adding an additional handler on top.
– n8sty
yesterday




How are you creating your logger? Possible you're using the default configuration and then adding an additional handler on top.
– n8sty
yesterday












I am creating it with the ordinary constructor logging.getLogger("thelogger"). You say "using the default configuration" -- how do I avoid that?
– Joshua Fox
yesterday




I am creating it with the ordinary constructor logging.getLogger("thelogger"). You say "using the default configuration" -- how do I avoid that?
– Joshua Fox
yesterday












You're almost definitely adding multiple handlers. Running import logging; logger=logging.getLogger('thelogger'); logger.addHandler(logging.StreamHandler()); logger.setLevel(logging.INFO); logger.warning('hi') returns hi. If you run that same command twice, the second invocation will print hi to the console twice. The order in which a logger is created matters so it's hard to say exactly why you're getting what you're getting without you showing what you're doing.
– n8sty
yesterday




You're almost definitely adding multiple handlers. Running import logging; logger=logging.getLogger('thelogger'); logger.addHandler(logging.StreamHandler()); logger.setLevel(logging.INFO); logger.warning('hi') returns hi. If you run that same command twice, the second invocation will print hi to the console twice. The order in which a logger is created matters so it's hard to say exactly why you're getting what you're getting without you showing what you're doing.
– n8sty
yesterday












In the line after the double-logging thelogger.info("xxx), I tried print(thelogger.handlers). It shows "[<StreamHandler <stdout> (INFO)>]" -- in other words, only one Handler. But note -- this occurs under Flask [edited main body]. When I run, e.g. a unittest, I don't get this doubling
– Joshua Fox
yesterday




In the line after the double-logging thelogger.info("xxx), I tried print(thelogger.handlers). It shows "[<StreamHandler <stdout> (INFO)>]" -- in other words, only one Handler. But note -- this occurs under Flask [edited main body]. When I run, e.g. a unittest, I don't get this doubling
– Joshua Fox
yesterday












I narrowed this down to a Google library. See body. But I still don't know how to avoid it.
– Joshua Fox
yesterday




I narrowed this down to a Google library. See body. But I still don't know how to avoid it.
– Joshua Fox
yesterday

















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