haixuanTao opened a new issue, #37496:
URL: https://github.com/apache/arrow/issues/37496
### Describe the bug, including details regarding any error messages,
version, and platform.
When using pyarrow, calling `py.array` on a `dict` creates a array of the
dict keys. In case the dict keys are string it's going to be converted into a
list of string, same things if the keys are int it's going to be a list of
ints.
In my opinion, it would be better to map it into a StructArray. In the same
way that when it's called encapsulated in a `list`. See the following example:
```python
>>> import pyarrow as pa
>>> pa.array({"a":1, "b":2})
<pyarrow.lib.StringArray object at 0x7f4bacb8e500>
[
"a",
"b"
]
>>> pa.array([{"a":1, "b":2}])
<pyarrow.lib.StructArray object at 0x7f4bacb8e560>
-- is_valid: all not null
-- child 0 type: int64
[
1
]
-- child 1 type: int64
[
2
]
```
Alternative could be to raise a warning or an error, as the encapsulation
can easily be forgotten.
See: https://github.com/dora-rs/dora/pull/346
### Component(s)
Python
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