She is shallow-copying the list to avoid modifying the original.

When you shallow-copy the list, modifications to nested objects will still be shared.

I shallow-copied the configuration object to test modifications without affecting the original.

The library shallow-copies configuration objects to avoid accidental mutation.

When cloning complex objects, developers must be careful that shallow copies can inadvertently share internal references.

I created a shallow copy of the dictionary and then changed a nested list inside it, only to find the modifications reflected in the original.