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Python agent v4.10.0.112

January 10, 2019Download


This release of the Python agent adds support for excluding attributes from span events and transaction trace segments, adds a new api called add_custom_parameters, and includes various bug fixes.

The agent can be installed using easy_install/pip/distribute via the Python Package Index or can be downloaded directly from the New Relic download site.


  • Add ability to exclude attributes from span events and transaction trace segments

    This release adds support to exclude attributes (such as http.url) from span events (via the span_events.include/span_events.exclude options) and from transaction segments (via the transaction_segments.include/transaction_segments.exclude option).

    As with other attribute destinations, these new options will inherit values from the top-level attributes.include/attributes.exclude settings. See the documentation for more information.

  • Add public add_custom_parameters API

    The method add_custom_parameters on Transaction is now exposed through newrelic.agent.add_custom_parameters

Bug Fixes

  • Transaction counts were not reported for aiohttp's built-in error pages

    When a built-in error route was reached in aiohttp (such as a 404 due to a missing route), transactions were not recorded. As a result, the transaction counts may have been artificially low. aiohttp system route traffic will now be reported.

  • aiohttp cross application tracing linking to non-Python applications may have been omitted if using multidict<3.0

    For aiohttp users using multidict versions less than 3.0, cross application tracing HTTP headers may have been generated in a way that was incompatible with non-Python applications. Headers are now generated in a format compatible with all New Relic agents.

  • aiohttp 3.5.x versions generated agent instrumentation errors

    The agent previously failed to instrument aiohttp applications running versions 3.5.0 and greater. The agent now supports aiohttp versions up to 3.5.1.

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