pitrou commented on pull request #10503:
URL: https://github.com/apache/arrow/pull/10503#issuecomment-862191654
It seems Pandas detects nulls in quoted strings. @jorisvandenbossche Do you
think we should do differently by default?
```python
>>> s = '''a,b\n1.0,"foo"\n"N/A","N/A"'''
>>> df = pd.read_csv(io.BytesIO(s.encode()))
>>> df
a b
0 1.0 foo
1 NaN NaN
```
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