adriangb opened a new issue, #39010:
URL: https://github.com/apache/arrow/issues/39010
### Describe the bug, including details regarding any error messages,
version, and platform.
```python
import pyarrow as pa
schema = pa.schema([pa.field('x', pa.map_(pa.string(), pa.int64()))])
data = [{'x': {'a': 1}}]
pa.RecordBatch.from_pylist(data, schema=schema).to_pylist()
# [{'x': [('a', 1)]}]
```
I understand that this may be how it's stored internally but I feel like it
should be converted to a dict.
Using `struct` is not an option because my keys are not fixed.
### Component(s)
Python
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