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Issues: pandas-dev/pandas

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157 Open 1,489 Closed
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Issues list

BUG: to_csv() quotechar/escapechar behavior differs from csv module Bug IO CSV read_csv, to_csv
#61407 opened May 8, 2025 by johnrtian
2 of 3 tasks
@omarraf
2
ENH: preview_csv(***.csv) for Fast First-N-Line Preview on Large Plus Size (>100GB) Enhancement IO CSV read_csv, to_csv Needs Discussion Requires discussion from core team before further action
#61281 opened Apr 13, 2025 by visheshrwl
1 of 3 tasks
3
[WIP] ENH: support reading directory in read_csv IO CSV read_csv, to_csv
#61275 opened Apr 12, 2025 by fangchenli Loading…
5 tasks
2
BUG: pd.read_csv() on empty files should give an empty dataframe pd.DataFrame() Bug Closing Candidate May be closeable, needs more eyeballs IO CSV read_csv, to_csv
#61172 opened Mar 24, 2025 by xuancong84
3 tasks done
1
@MartinBraquet
4
BUG: Inconsistent index type when using read_csv with string[pyarrow] dtype API - Consistency Internal Consistency of API/Behavior Bug IO CSV read_csv, to_csv Needs Discussion Requires discussion from core team before further action
#61145 opened Mar 19, 2025 by ptth222
2 of 3 tasks
4
ENH: Pass col_len to on_bad_lines callable Enhancement IO CSV read_csv, to_csv Needs Discussion Requires discussion from core team before further action
#60999 opened Feb 24, 2025 by ansalls
1 of 3 tasks
9
Support for Storing and Retrieving Complex Data Types (e.g., Embeddings) in Pandas DataFrames Complex Complex Numbers Enhancement IO CSV read_csv, to_csv
#60895 opened Feb 9, 2025 by ashishjaimongeorge
3 tasks done
1
10
BUG: quoting=csv.QUOTE_NONNUMERIC adds extra decimal places Bug IO CSV read_csv, to_csv
#60699 opened Jan 12, 2025 by Gabriel-p
3 tasks done
1
@akj2018
4
BUG: csv.QUOTE_NOTNULL doesn't seem to be supported by DataFrame.to_csv(), but there's no error and it's not documented Enhancement IO CSV read_csv, to_csv Needs Discussion Requires discussion from core team before further action
#60423 opened Nov 26, 2024 by wjandrea
3 tasks done
17
BUG: reading long csv with high numeric values displays a "mixed types" message Bug Closing Candidate May be closeable, needs more eyeballs IO CSV read_csv, to_csv
#60082 opened Oct 22, 2024 by MayeulC-ST
2 of 3 tasks
3
BUG: memory leak when using read_csv with python engine Bug IO CSV read_csv, to_csv Needs Info Clarification about behavior needed to assess issue
#59694 opened Sep 3, 2024 by r1ckdu
3 tasks done
1
BUG: inconsistency when read_csv reads MultiIndex with empty values Bug IO CSV read_csv, to_csv MultiIndex
#59560 opened Aug 20, 2024 by ldouteau
2 of 3 tasks
1
@brandonmonge
3
BUG: Error message in read_csv misleading when using decimal="," Bug Error Reporting Incorrect or improved errors from pandas IO CSV read_csv, to_csv
#59299 opened Jul 23, 2024 by behrenhoff
2 of 3 tasks
@Animesh-Shukla
1
BUG: unexpected behavior when Loading lines like "\""\t"a" Bug IO CSV read_csv, to_csv
#59222 opened Jul 10, 2024 by hyleepp
3 tasks done
@Anurag-Varma
6
ValueError: Usecols do not match columns, columns expected but not found: ['Col3', 'Col1'] Bug IO CSV read_csv, to_csv
#59139 opened Jun 28, 2024 by Hermann12
3 tasks done
6
BUG: None becomes empty string when writing multiple columns to CSV, but double quotes "" when writing single columns Bug Closing Candidate May be closeable, needs more eyeballs IO CSV read_csv, to_csv
#59116 opened Jun 26, 2024 by mvashishtha
2 of 3 tasks
3
BUG: Parameter converters when using the read function. Bug IO CSV read_csv, to_csv Needs Triage Issue that has not been reviewed by a pandas team member
#59026 opened Jun 17, 2024 by Thanaraklee
3 tasks done
@pongpatapee @Thanaraklee
4
BUG: Reading large CSV files with pyarrow when values contain newline character. Arrow pyarrow functionality Bug IO CSV read_csv, to_csv
#59009 opened Jun 13, 2024 by matteosantama
2 of 3 tasks
1
@wooseogchoi
10
ENH: The parameter date_format in read_csv Enhancement IO CSV read_csv, to_csv Needs Discussion Requires discussion from core team before further action
#58463 opened Apr 28, 2024 by BdR76
1 of 3 tasks
1
BUG: skiprows ignored in read_csv(engine="pyarrow") Arrow pyarrow functionality Bug IO CSV read_csv, to_csv
#58048 opened Mar 28, 2024 by rohanjain101
3 tasks done
@ashorkey-umich
5
BUG: pd.read_csv error when parse_dates used on index_col for dtype_backend="pyarrow" Arrow pyarrow functionality Bug Datetime Datetime data dtype ExtensionArray Extending pandas with custom dtypes or arrays. IO CSV read_csv, to_csv
#57930 opened Mar 20, 2024 by MCRE-BE
2 of 3 tasks
1
@lithomas1
12
BUG: pyarrow stripping leading zeros with dtype=str Arrow pyarrow functionality Bug IO CSV read_csv, to_csv
#57666 opened Feb 28, 2024 by dadrake3
3 tasks done
@kristinburg
5
BUG: Unexpected read_csv parse_dates behavior Bug datetime.date stdlib datetime.date support Dtype Conversions Unexpected or buggy dtype conversions IO CSV read_csv, to_csv
#57512 opened Feb 19, 2024 by kounoupis
2 of 3 tasks
1
@ruimamaral
6
BUG: Inconsistent handling of named column indices in to_csv() and read_csv(). Bug IO CSV read_csv, to_csv Needs Discussion Requires discussion from core team before further action
#57453 opened Feb 16, 2024 by normanius
3 tasks done
4
BUG: unexpected behavior in read_csv with pyarrow engine and dtype string Arrow pyarrow functionality Bug IO CSV read_csv, to_csv
#57100 opened Jan 27, 2024 by alejoforero
3 tasks done
@vinodseshadri
3
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