What this snippet does
Built-in types like lists and dicts do not support weakrefs directly.
Expected output
cannot create weak reference to 'list' object
Why practise typing this
Typing memory management code builds muscle memory for the symbols and indentation Python uses most, which prose-based typing tests never cover. DevType measures your words per minute and accuracy on this snippet and tracks the individual characters you mistype, so later lessons can target them.
More Python practice
- Reference CountingMemory Management · advanced
- Cyclic ReferencesMemory Management · advanced
- Del Method GCMemory Management · advanced
- Weak ReferenceMemory Management · advanced
- Weak CacheMemory Management · advanced
- Dynamic TypingVariables & Types · beginner