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BUG: frame_length_0[key] = nonempty_frame raises ValueError #38831

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jbrockmendel opened this issue Dec 30, 2020 · 0 comments · Fixed by #38931
Closed

BUG: frame_length_0[key] = nonempty_frame raises ValueError #38831

jbrockmendel opened this issue Dec 30, 2020 · 0 comments · Fixed by #38931
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Bug Indexing Related to indexing on series/frames, not to indexes themselves
Milestone
1.3

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@jbrockmendel
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df = pd.DataFrame(columns=["A", "B"])

other = pd.DataFrame({"B": [1, 2]})

>>> df["B"] = other
ValueError: Cannot set a frame with no defined index and a value that cannot be converted to a Series

>>> df[["B"]] = other   # <-- works as expected
@jbrockmendel jbrockmendel added Bug Indexing Related to indexing on series/frames, not to indexes themselves Needs Triage Issue that has not been reviewed by a pandas team member labels Dec 30, 2020
@rhshadrach rhshadrach removed the Needs Triage Issue that has not been reviewed by a pandas team member label Jan 2, 2021
@rhshadrach rhshadrach added this to the Contributions Welcome milestone Jan 2, 2021
@phofl phofl mentioned this issue Jan 3, 2021
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@jreback jreback modified the milestones: Contributions Welcome, 1.3 Jan 5, 2021
@ggold7046 ggold7046 mentioned this issue Aug 10, 2023
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Bug Indexing Related to indexing on series/frames, not to indexes themselves
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1.3
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@jreback @jbrockmendel @rhshadrach