Answer
weakref allows referencing objects without preventing GC.
Useful for caching and avoiding memory leaks.
Useful for caching and avoiding memory leaks.
Quick Answer
Weak references (weakref module) hold references to objects without preventing garbage collection. When the referenced object has no strong references left, it's collected even if a weak reference exists. weakref.ref(obj) creates one. weakref.WeakValueDictionary caches objects without preventing GC. Use for: caches that should release memory under pressure, observer patterns without strong coupling.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ