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[WTForms] Accept lazy strings for labels, descriptions and messages - #16507
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# Conflicts: # stubs/WTForms/wtforms/fields/choices.pyi # stubs/WTForms/wtforms/fields/datetime.pyi # stubs/WTForms/wtforms/fields/form.pyi # stubs/WTForms/wtforms/fields/list.pyi # stubs/WTForms/wtforms/fields/numeric.pyi # stubs/WTForms/wtforms/fields/simple.pyi # stubs/WTForms/wtforms/validators.pyi
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According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉 |
srittau
approved these changes
Nov 3, 2026
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Closes #16489.
Adds a private
_LazyStringprotocol (__html__+__mod__) and accepts it alongsidestrfor field labels/descriptions,Labeltext, validator messages, andValidationError/StopValidation.errorscollections staystrto avoid breaking code that reads them back.Upstream:
Label.__call__renders viamarkupsafe.escape(); validators such asLength%-format their message.Agent: Claude Code