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      <title>Python copy 實戰：淺拷貝、深拷貝與物件圖陷阱</title>
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dedup note: The planned `python-struct` topic was rejected because its slug directory already exists. This replacement is distinct from ../python-dataclasses/, ../python-collections/, and ../rust-ownership/: those posts focus on data classes, specialized containers, and Rust ownership. This article focuses on Python object aliasing, shallow versus deep copy, cyclic object graphs, memoization, custom copy hooks, and selective-copy design.
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