Skip to content

Navigation Menu

Sign in

Search code, repositories, users, issues, pull requests...

Provide feedback

We read every piece of feedback, and take your input very seriously.

Saved searches

Use saved searches to filter your results more quickly
Appearance settings

Issues: pandas-dev/pandas

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Clear current search query, filters, and sorts
205 Open 2,504 Closed
205 Open 2,504 Closed
Author
Filter by author
Loading
Label
Filter by label
Loading
Use alt + click/return to exclude labels
or ⇧ + click/return for logical OR
Projects
Filter by project
Loading
Milestones
Filter by milestone
Loading
Assignee
Filter by who’s assigned
Sort
Sort by
Newest Oldest Most commented Least commented Recently updated Least recently updated Best match
Most reactions
👍 👎 😄 🎉 😕 ❤️ 🚀 👀

Issues list

DOC: Series.name is just Hashable, but many column arguments require str Docs good first issue Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#61432 opened May 12, 2025 by cmp0xff
1 task done
1
BUG: Duplicate columns allowed on merge if originating from separate dataframes Bug Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#61402 opened May 7, 2025 by nikaltipar
3 tasks done
1
@Farsidetfs @samruddhibaviskar11
8
BUG: NA are coerced in to NaN by concat Bug Dtype Conversions Unexpected or buggy dtype conversions Missing-data np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate PDEP missing values Issues that would be addressed by the Ice Cream Agreement from the Aug 2023 sprint Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#61303 opened Apr 17, 2025 by davetapley
3 tasks done
4
BUG: join unexpectedly created extra column start with "key_" Bug Deprecate Functionality to remove in pandas Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#61294 opened Apr 15, 2025 by albb318
3 tasks done
@ShayanG9
7
BUG: Exception with unstack(sort=False) and NA in index Bug ExtensionArray Extending pandas with custom dtypes or arrays. Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#61221 opened Apr 3, 2025 by jlumpe
2 of 3 tasks
1
2
ENH: merge_asof threshold minimum Enhancement Needs Discussion Requires discussion from core team before further action Needs Info Clarification about behavior needed to assess issue Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#61164 opened Mar 21, 2025 by Lituchy
1 of 3 tasks
6
DOC: Pivot() example call incorrectly used and would give "error: duplicate index" Error Reporting Incorrect or improved errors from pandas Needs Info Clarification about behavior needed to assess issue Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#61058 opened Mar 5, 2025 by mheskett
1 task done
3
ENH: Make merge_asof preserve the index Closing Candidate May be closeable, needs more eyeballs Enhancement Needs Discussion Requires discussion from core team before further action Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#60919 opened Feb 12, 2025 by wahsmail
3 tasks done
3
BUG: crosstab(aggfunc='skew') raises IndexError: single positional indexer is out-of-bounds Bug Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#60768 opened Jan 23, 2025 by sfc-gh-mvashishtha
2 of 3 tasks
@KevsterAmp
4
BUG: pd.crosstab(dropna=True, values=) drops rows and columns where any aggregation result is null. Bug Needs Discussion Requires discussion from core team before further action Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#60767 opened Jan 22, 2025 by sfc-gh-mvashishtha
2 of 3 tasks
1
TST(string dtype): Resolve xfails in test_from_dummies Needs Discussion Requires discussion from core team before further action Reshaping Concat, Merge/Join, Stack/Unstack, Explode Strings String extension data type and string data Testing pandas testing functions or related to the test suite
#60694 opened Jan 11, 2025 by rhshadrach Loading…
5 tasks
2.3
4
ENH: Copy attrs on join (possibly depending on left, right, etc.) Enhancement metadata _metadata, .attrs Needs Info Clarification about behavior needed to assess issue Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#60351 opened Nov 18, 2024 by rommeswi
1 of 3 tasks
1
8
BUG: when using id_vars in .melt(), the id_vars does not recognize the column name in a multiIndex dataframe Bug Index Related to the Index class or subclasses Needs Discussion Requires discussion from core team before further action Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#60018 opened Oct 11, 2024 by ivan-marroquin
3 tasks done
6
BUG: pd.concat() cannot concatenate more than 3 mixed-frequency dataframes with multi-index series Bug Needs Discussion Requires discussion from core team before further action Period Period data type Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#59775 opened Sep 11, 2024 by sakaiando
3 tasks done
@dberardi99
2
BUG: DataFrame.stack does not work when columns includes tuple level Bug Closing Candidate May be closeable, needs more eyeballs Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#59697 opened Sep 3, 2024 by or-jether
2 of 3 tasks
1
ENH: Support for semi-join on index (subsetting a multi-index dataframe with a subset of the multi-index) Closing Candidate May be closeable, needs more eyeballs Enhancement Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#58873 opened May 31, 2024 by gwerbin
1 of 3 tasks
6
BUG: pd.concat fails with large index values when using ArrowDtype Arrow pyarrow functionality Bug Dtype Conversions Unexpected or buggy dtype conversions Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#58819 opened May 24, 2024 by hombit
3 tasks done
1
BUG: .max() raises exception on Series with object dtype and mixture of Timestamp and NaT: TypeError: '>=' not supported between instances of 'Timestamp' and 'float' Bug Dtype Conversions Unexpected or buggy dtype conversions Reshaping Concat, Merge/Join, Stack/Unstack, Explode Timezones Timezone data dtype
#58707 opened May 13, 2024 by kerrickstaley
2 of 3 tasks
@li00-lab
4
BUG: concatenating time series with non ns unit leads to dataframe with missing data Bug Frequency DateOffsets Needs Tests Unit test(s) needed to prevent regressions Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#58471 opened Apr 29, 2024 by jorgehv
3 tasks done
7
Fix stubname equal suffix in wide to long function Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#57868 opened Mar 16, 2024 by tqa236 Loading…
2 of 5 tasks
1
1
Deprecate accepting None in pd.concat Deprecate Functionality to remove in pandas Needs Discussion Requires discussion from core team before further action Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#57846 opened Mar 14, 2024 by twoertwein
1
3
BUG: melt no longer supports id_vars and value_vars collapsing levels accross MultiIndex Bug Regression Functionality that used to work in a prior pandas version Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#57663 opened Feb 28, 2024 by mark-thm
3 tasks done
2.3
2
DEPR: pd.concat special cases DatetimeIndex to sort even when sort=False Deprecate Functionality to remove in pandas Needs Discussion Requires discussion from core team before further action Reshaping Concat, Merge/Join, Stack/Unstack, Explode Sorting e.g. sort_index, sort_values
#57335 opened Feb 10, 2024 by lukemanley 3.0
8
BUG: pd.merge has unexpected behaviour when joining on index / column Bug Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#57291 opened Feb 7, 2024 by sledtester
2 of 3 tasks
1
@Manjugadupudi @rob-sil
4
BUG: df.stack() returns wrong data when NaT is in index (regression since 2.1.0, ok in <= 2.0.3) Bug Regression Functionality that used to work in a prior pandas version Reshaping Concat, Merge/Join, Stack/Unstack, Explode
#57152 opened Jan 30, 2024 by behrenhoff
3 tasks done
2.3
3
ProTip! Adding no:label will show everything without a label.
Morty Proxy This is a proxified and sanitized view of the page, visit original site.