API: should creating a Series from a Series return a shallow copy? (share data, not attributes) #49523
Labels
Constructors
Series/DataFrame/Index/pd.array Constructors
Copy / view semantics
Series
Series data structure
Currently, if you create a Series from another Series, you get a new object, but because it shares the manager, it also shares the index:
Is this the desired / expected behaviour?
When doing an explicit shallow copy, this doesn't happen:
In both cases, changing an element of either Series updates the other (eg
s[0] = 10
), which is currently expected with a Series(.., copy=False) / shallow copy. But so it is not about sharing values, but whether it should also share the underlying manager (with the result that changing attributes of that manager (the axes), also updates the other)(running with current main, which is '2.0.0.dev0+566.g57d8d3a7cc')
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