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Flask v2.0.3 Release Notes

  • 🚀 Released 2022-02-14

    • ✅ The test client's as_tuple parameter is deprecated and will be removed in Werkzeug 2.1. It is now also deprecated in Flask, to be removed in Flask 2.1, while remaining compatible with both in 2.0.x. Use response.request.environ instead. :pr:4341
    • Fix type annotation for errorhandler decorator. :issue:4295
    • ⏪ Revert a change to the CLI that caused it to hide ImportError tracebacks when importing the application. :issue:4307
    • app.json_encoder and json_decoder are only passed to dumps and loads if they have custom behavior. This improves performance, mainly on PyPy. :issue:4349
    • Clearer error message when after_this_request is used outside a request context. :issue:4333