judahrand commented on issue #43985:
URL: https://github.com/apache/arrow/issues/43985#issuecomment-2424695945
> An object being equal to itself seems reasonable, no matter the value
stored inside?
I disagree. For an explicit `.equals` method I would expect the result to be
the same whether the Python object is the same or if the object is a copy. This
is not the current behaviour:
```python
>>> import pyarrow as pa
>>> table_1 = pa.Table.from_pydict({"foo": [0.1]})
>>> table_2 = pa.Table.from_pydict({"foo": [0.1]})
>>> table_1.equals(table_2)
True
```python
>>> table_1 = pa.Table.from_pydict({"foo": [float("nan")]})
>>> table_2 = pa.Table.from_pydict({"foo": [float("nan")]})
>>> table_1.equals(table_2)
False
>>> table_1.equals(table_1)
True
```
It feels really weird and unexpected to me for `.equals` to behave
differently depending on the _contents_ on the table.
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