8000 Pass kwargs from read_parquet() to the underlying engines. by criemen · Pull Request #18216 · pandas-dev/pandas · GitHub
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Pass kwargs from read_parquet() to the underlying engines. #18216

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Merged
merged 8 commits into from
Nov 14, 2017
Merged

Pass kwargs from read_parquet() to the underlying engines. #18216

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ab26304
Pass kwargs from read_parquet() to the underlying engines.
Nov 10, 2017
66e34fc
Add PR number to whatsnew file.
Nov 10, 2017
248a334
Fix PEP8 issue.
Nov 10, 2017
1c045a5
Fix wrong tests, which called read_parquet with a compression paramet…
Nov 13, 2017
61748d8
Actually pass kwargs from to_parquet to fastparquet.
Nov 13, 2017
243172d
Test filtering the row groups for fastparquet.
Nov 13, 2017
6187a7c
Refactor check_round_trip test method.
Nov 14, 2017
edbd937
Fix linting errors.
Nov 14, 2017
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Test filtering the row groups for fastparquet.
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Cornelius Riemenschneider committed Nov 13, 2017
commit 243172d80097e52eb032aab10f3967dd8598db5e
9 changes: 9 additions & 0 deletions pandas/tests/io/test_parquet.py
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Original file line number Diff line number Diff line change
Expand Up @@ -425,3 +425,12 @@ def test_datetime_tz(self, fp):
with catch_warnings(record=True):
self.check_round_trip(df, fp, df.astype('datetime64[ns]'),
extra_write_kwargs={'compression': None})

def test_filter_row_groups(self, fp):
d = {'a': list(range(0, 3))}
df = pd.DataFrame(d)
with tm.ensure_clean() as path:
df.to_parquet(path, fp, compression=None,
row_group_offsets=1)
result = read_parquet(path, fp, filters=[('a', '==', 0)])
assert len(result) == 1
0