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Use highest protocol.

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Robert Nishihara authored and Wes McKinney committed 2018-02-19 17:58:09 -05:00
1 parent 6e3eceb62c
commit e12cd72187
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python/pyarrow/pandas_compat.py
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@@ -434,7 +434,8 @@ def dataframe_to_serialized_dict(frame):
# subclass of _int.ObjectBlock.
if type(block) == _int.ObjectBlock:
block_data['object'] = None
block_data['block'] = builtin_pickle.dumps(values)
block_data['block'] = builtin_pickle.dumps(
values, protocol=builtin_pickle.HIGHEST_PROTOCOL)
blocks.append(block_data)