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### Fix mutable default in [ListMemoryConfig](cci:2://file:///c:/Users/T2430514/Downloads/autogen/python/packages/autogen-core/src/autogen_core/memory/_list_memory.py:12:0-18:65) [ListMemoryConfig](cci:2://file:///c:/Users/T2430514/Downloads/autogen/python/packages/autogen-core/src/autogen_core/memory/_list_memory.py:12:0-18:65) used a shared empty list (`memory_contents: List[MemoryContent] = []`) as its default, causing every [ListMemory](cci:2://file:///c:/Users/T2430514/Downloads/autogen/python/packages/autogen-core/src/autogen_core/memory/_list_memory.py:21:0-171:79) instance to share the same underlying list. This unexpected state leakage let memories written in one instance silently surface in others, breaking isolation and leading to hard-to-reproduce bugs. Replaced the mutable default with a safe Pydantic `Field(default_factory=list)`, ensuring each configuration—and thus each [ListMemory](cci:2://file:///c:/Users/T2430514/Downloads/autogen/python/packages/autogen-core/src/autogen_core/memory/_list_memory.py:21:0-171:79)—gets its own independent list. --------- Co-authored-by: T2430514 <t2430514@gmail.com> Co-authored-by: Eric Zhu <ekzhu@users.noreply.github.com>
AutoGen Core
AutoGen core offers an easy way to quickly build event-driven, distributed, scalable, resilient AI agent systems. Agents are developed by using the Actor model. You can build and run your agent system locally and easily move to a distributed system in the cloud when you are ready.