stemillington-flock opened a new issue, #44853: URL: https://github.com/apache/arrow/issues/44853
### Describe the bug, including details regarding any error messages, version, and platform. The following code runs without problem ``` from pyarrow import schema, struct, field from pyarrow import uuid schema([ field("col", uuid()) ]).empty_table() ``` However when i try to move the uuid column into a struct as below ``` schema([ field("parent", struct([ field("col", uuid()) ])) ]).empty_table() ``` I get the error ``` ArrowNotImplementedError Traceback (most recent call last) Cell In[77], [line 5](vscode-notebook-cell:?execution_count=77&line=5) [1](vscode-notebook-cell:?execution_count=77&line=1) schema([ [2](vscode-notebook-cell:?execution_count=77&line=2) field("parent", struct([ [3](vscode-notebook-cell:?execution_count=77&line=3) field("col", uuid()) [4](vscode-notebook-cell:?execution_count=77&line=4) ])) ----> [5](vscode-notebook-cell:?execution_count=77&line=5) ]).empty_table() File ~/Code/map-matching/.venv/lib/python3.12/site-packages/pyarrow/types.pxi:2988, in pyarrow.lib.Schema.empty_table() File ~/Code/map-matching/.venv/lib/python3.12/site-packages/pyarrow/array.pxi:4791, in pyarrow.lib._empty_array() File ~/Code/map-matching/.venv/lib/python3.12/site-packages/pyarrow/array.pxi:370, in pyarrow.lib.array() File ~/Code/map-matching/.venv/lib/python3.12/site-packages/pyarrow/array.pxi:42, in pyarrow.lib._sequence_to_array() File ~/Code/map-matching/.venv/lib/python3.12/site-packages/pyarrow/error.pxi:155, in pyarrow.lib.pyarrow_internal_check_status() File ~/Code/map-matching/.venv/lib/python3.12/site-packages/pyarrow/error.pxi:92, in pyarrow.lib.check_status() ArrowNotImplementedError: extension ``` This appears to happen when any extension type is moved into a struct. Using pyarrow 18.0.0 on a mac book pro M2. ### Component(s) Python -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@arrow.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org