---
mapped_pages:
  - https://www.elastic.co/guide/en/apm/agent/python/current/advanced-topics.html
applies_to:
  stack:
  serverless:
    observability:
  product:
    apm_agent_python: ga
---

# Advanced topics [advanced-topics]

* [Instrumenting custom code](/reference/instrumenting-custom-code.md)
* [Sanitizing data](/reference/sanitizing-data.md)
* [How the Agent works](/reference/how-agent-works.md)
* [Run Tests Locally](/reference/run-tests-locally.md)





