docs: clarify append_context_keys behavior with overlapping keys #7846
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Fixes aws-powertools#7690 Clarifies that append_context_keys() removes all added keys on exit, including keys that already existed with the same name. This addresses user confusion about the 'temporarily' behavior when keys overlap. Changes: - Updated docstrings in formatter.py and logger.py with clear warning - Added detailed documentation in logger.md with collision example - Explains that original values are lost when keys overlap - Recommends using append_keys() for persistent keys to avoid collisions This is a documentation-only fix that clarifies current behavior without changing functionality.
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leandrodamascena
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Jan 5, 2026
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Thanks fir the PR @oyiz-michael!
APPROVED!
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## develop #7846 +/- ##
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Coverage 96.54% 96.54%
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Files 275 275
Lines 13194 13194
Branches 999 999
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Hits 12738 12738
Misses 353 353
Partials 103 103 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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Issue number: closes #7690
Summary
This PR clarifies the behavior of
append_context_keys()when keys overlap with existing keys, addressing user confusion reported in #7690. This is a documentation-only fix that explains the current implementation without changing functionality.Changes
Updated docstrings in
formatter.pyandlogger.py:append_keys()for persistent keysEnhanced documentation in
docs/core/logger.md:order_id="ORD-123"is lost after usingappend_context_keys(order_id="ORD-CHILD")User experience
Before:
After:
append_keys()for persistent context, avoid overlapping key names withappend_context_keys()By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.
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