[ARROW-3656] [C++] Allow whitespace in numeric CSV fields

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.11.0
• Fix Version/s: 0.12.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/19962
• Assignee: Antoine Pitrou
• Reporter: Antoine Pitrou
• Created: 30/Oct/18 17:05
• Updated: 11/Jan/23 07:28
• Resolved: 05/Nov/18 20:59

Description

Pandas allows whitespace before and after numbers in CSV files, but Arrow doesn't:

>>> s = b"a,b,c\n12 , 34 , 56\n"
>>> pd.read_csv(io.BytesIO(s))
    a   b   c
0  12  34  56
>>> csv.read_csv(io.BytesIO(s)).to_pandas()
        a        b       c
0  b'12 '  b' 34 '  b' 56'

Issue Links

• links to: GitHub Pull Request #2875