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Fix binary operations on attrs for Series and DataFrame #59636

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Fix binary operations on attrs for Series and DataFrame #59636

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fbourgey
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WillAyd
WillAyd requested changes Sep 20, 2024
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Small change to prefer fixtures to writing out our own binop implementations, but generally lgtm. I don't think current CI failures are related.

@mroeschke any thoughts here?

pandas/tests/frame/test_api.py Outdated
df_2 = DataFrame({"A": [-3, 9]})
attrs = {"info": "DataFrame"}
df_1.attrs = attrs
assert (df_1 + df_2).attrs == attrs
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Rather than doing this you can just use the all_binary_operators fixture from conftest.py (I think)

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I made the change.

mroeschke
mroeschke requested changes Sep 25, 2024
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I think attrs propagation logic should should only be handled by __finalize__, so these binary operations should dispatch to that method

@mroeschke mroeschke added metadata _metadata, .attrs Numeric Operations Arithmetic, Comparison, and Logical operations labels Sep 25, 2024
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@mroeschke should everything be rewritten using finalize then?

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@WillAyd WillAyd WillAyd requested changes

@mroeschke mroeschke mroeschke requested changes

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metadata _metadata, .attrs Numeric Operations Arithmetic, Comparison, and Logical operations
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BUG: binary operations don't propogate attrs depending on order with Series and/or DataFrame/Series
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@fbourgey @WillAyd @mroeschke