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Deprecations via warnings don't work for Python libraries

2 days ago
https://sethmlarson.dev/deprecations-via-warnings-dont-work-for-python-libraries
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  • #Python
  • #API Deprecation
  • #urllib3
  • urllib3 v2.6.0 removed deprecated APIs, causing unexpected breaks despite long-standing warnings.
  • DeprecationWarning in Python is ineffective for API deprecation due to being ignored by default.
  • Proposed solutions include custom deprecation warnings or adopting SemVer with frequent major versions.
  • The incident highlights challenges in deprecating APIs in widely-used libraries without disrupting users.
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