Does Python 3.15 make every import lazy?
No. Lazy imports are explicit and opt-in under the new syntax. The feature is module-scoped and has limits, including star imports and future imports; existing imports do not silently become lazy across an application.
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Python 3.15 Makes Lazy Imports Explicit and UTF-8 the DefaultThe new stable release adds opt-in lazy imports and changes the default text encoding, creating two different migration checks for Python teams.
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