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BUG: ArrayManager changes Series.to_frame() from view to copy #42512

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jbrockmendel opened this issue Jul 12, 2021 · 1 comment
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BUG: ArrayManager changes Series.to_frame() from view to copy #42512

jbrockmendel opened this issue Jul 12, 2021 · 1 comment
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Bug Copy / view semantics

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@jbrockmendel
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ser = pd.Series(range(5))
df = ser.to_frame()

ser._mgr.arrays[0][0] = 10

>>> df.iloc[0, 0]
0   # <-- ArrayManager
10  # <-- BlockManager

cc @jorisvandenbossche
@jbrockmendel jbrockmendel added Bug Needs Triage Issue that has not been reviewed by a pandas team member Copy / view semantics and removed Needs Triage Issue that has not been reviewed by a pandas team member labels Jul 12, 2021
@jbrockmendel jbrockmendel mentioned this issue Jul 12, 2021
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@rhshadrach
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The ArrayManager is now deprecated. Closing.

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@jbrockmendel @rhshadrach