[C++] Slash character in partition value handling

import pandas as pd
import pyarrow as pa

from pyarrow import dataset as ds

df = pd.DataFrame({
    'value': [1, 2],
    'instrument_id': ['A/Z', 'B'],
})

ds.write_dataset(
    data=pa.Table.from_pandas(df),
    base_dir='data',
    format='parquet',
    partitioning=['instrument_id'],
    partitioning_flavor='hive',
)

table = ds.dataset(
    source='data',
    format='parquet',
    partitioning='hive',
).to_table()

tables = [table]

df = pa.concat_tables(tables).to_pandas()  tables = [table]

df = pa.concat_tables(tables).to_pandas() 

print(df.head())

   value instrument_id
0      1             A
1      2             B 

   value instrument_id
0      1             A/Z
1      2             B