milesgranger commented on code in PR #13821:
URL: https://github.com/apache/arrow/pull/13821#discussion_r943083115
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python/pyarrow/tests/parquet/test_parquet_file.py:
##########
@@ -277,3 +278,77 @@ def test_pre_buffer(pre_buffer):
buf.seek(0)
pf = pq.ParquetFile(buf, pre_buffer=pre_buffer)
assert pf.read().num_rows == N
+
+
+def test_parquet_file_explicitly_closed(tmpdir):
+ """
+ Unopened files should be closed explicitly after use,
+ and previously opened files should be left open.
+ Applies to read_table, ParquetDataset, and ParquetFile
+ """
+ # create test parquet file
+ df = pd.DataFrame([{'col1': 0, 'col2': 0}, {'col1': 1, 'col2': 1}])
Review Comment:
Thanks for pointing that out. 👍
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