wence- opened a new issue, #40743: URL: https://github.com/apache/arrow/issues/40743
### Describe the bug, including details regarding any error messages, version, and platform. ``` pa.__version__ => 15.0.2 pandas.__version__ => 3.0.0.dev0+584.g41383cf140 ``` Consider: ```python import pandas as pd import pyarrow as pa from pandas.testing import assert_frame_equal from io import BytesIO data = pd.DataFrame(index=pd.RangeIndex(0, 10), data=None) tab = pa.table(data) buf = BytesIO() pa.parquet.write_table(tab, buf) got = pa.parquet.read_table(buf) assert tab.shape == got.shape # False # and hence expect = data got_tab = tab.to_pandas() assert_frame_equal(expect, got_tab) # True got_pq = got.to_pandas() assert_frame_equal(expect, got_pq) # False # and hence buf = BytesIO() data.to_parquet(buf, index=None) got = pd.read_parquet(buf) assert_frame_equal(data, got) # False ``` The round-trip through `pa.table` was fixed in #26599. ### 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
