Python package called SignalFx, how to get _logger to print to stdout

Question

There is a Python package for SignalFx: link to GitHub source

In one of its files, it makes a _logger object that uses Python's logging library. The package has many _logger.debug() statements that make it useful in debugging connectivity problems.

The code instantiates the _logger as a global variable, like so:

_logger = logging.getLogger(__name__)

Source line in GitHub

I have searched for a while, and can't figure out how to view the _logger.debug()'s output. How can I get the _logger to print to stdout? Or, where can I view the log statements?

Thank you in advance!

Answer 1

You probably need to configure logging in your application which uses SignalFx. For example, this might work in your main program script:

if __name__ == '__main__':
    import logging  # if not done already

    logging.basicConfig(level=logging.DEBUG, format='%(name)s %(message)s')

    # and then the rest of your script's code

If that doesn't produce results, you probably need to give more information about how your code that uses SignalFx is organised.

Answer 2

Okay to circle back on this one, I finally have an answer built up based on two questions:

1. The question here: How to use logging.getLogger(__name__) in multiple modules
2. The answer here: https://stackoverflow.com/a/56840272/11163122

The first question was useful because I realized why the package used getLogger(__name__). It also made me realize I just needed to get access to the package's base logger, named signalfx.

The second answer was useful because I realized I could basically import the logger without needing to import _logger from SignalFx.

My final solution (in my code), was this:

sfx_logger = logging.getLogger("signalfx")
sfx_logger.setLevel(logging.DEBUG)
sfx_logger.addHandler(logging.StreamHandler(sys.stdout))

Now, the SignalFx logger prints to stdout, and I can see all the debug statements!