MainRo opened a new issue, #45527:
URL: https://github.com/apache/arrow/issues/45527
### Describe the bug, including details regarding any error messages,
version, and platform.
Doing introspection on a Schema object fails on ListType fields.
On this example schema:
```python
test_schema = pa.schema([
('f0', pa.string()),
('f1', pa.list_(pa.string())),
])
```
The string representation is:
```
print(test_schema)
f0: string
f1: list<item: string>
child 0, item: string
```
When doing introspection with the flatten method, it fails to go through the
"item" layer of the list, and instead iterates infinitely on it:
```python
print(test_schema.field(1).name)
print(test_schema.field(1).flatten())
print(test_schema.field(1).flatten()[0].flatten())
...
```
```
f1
[pyarrow.Field<f1: list<item: string>>]
[pyarrow.Field<f1: list<item: string>>]
...
```
I would expect the following result:
```
f1
[pyarrow.Field<f1: list<item: string>>]
[pyarrow.Field<f1.item: string>]
```
That would allow to iterate through the whole schema fields.
### Component(s)
Python
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