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GitHub / pandas-dev/pandas issues and pull requests

Labelled with: Needs Info

#62287 - ENH: Support `method` and `tolerance` kwargs in `Index.slice_indexer`

Issue - State: closed - Opened by TomNicholas 2 months ago - 1 comment
Labels: Enhancement, Indexing, Needs Info

#61888 - ENH: Images embedded in cells. The DISPIMG function of WPS

Issue - State: closed - Opened by lunavexxx 4 months ago - 11 comments
Labels: Enhancement, Needs Info, Needs Triage, Closing Candidate

#61687 - BUG: DataFrame.mul() corrupts data by setting values to zero

Issue - State: open - Opened by fheisigx 5 months ago - 5 comments
Labels: Bug, Numeric Operations, Needs Info

#61566 - BUILD: Installation issue on Mac with M1 Pro arm64 processor. pandas_parser.cpython-311-darwin.so is using x86_64 arch

Issue - State: closed - Opened by Leviann 6 months ago - 2 comments
Labels: Build, Needs Info, OS X

#61479 - BUG: read_hdf() doesn't handle datetime64[ms] properly

Issue - State: closed - Opened by a-ma72 6 months ago - 2 comments
Labels: Bug, IO HDF5, Needs Info, Closing Candidate

#61456 - PERF: Setting an item of incompatible dtype

Issue - State: open - Opened by muhannad125 6 months ago - 1 comment
Labels: Indexing, Performance, Needs Info

#61319 - ENH: grep-like select columns of a DataFrame by a part of their names

Issue - State: closed - Opened by kirisakow 7 months ago - 3 comments
Labels: Enhancement, Indexing, Needs Info

#61310 - BUG: no last function in window rolling

Issue - State: closed - Opened by algonell 7 months ago - 3 comments
Labels: Bug, Needs Info, Window, Closing Candidate

#61218 - QST: Should the absence of tzdata package affect the performance in any way ?

Issue - State: closed - Opened by sdg002 8 months ago - 6 comments
Labels: Usage Question, Needs Info

#61187 - BUG: DataFrame.min raises TypeError when column contains mixed types (e.g., np.nan and datetime)

Issue - State: closed - Opened by tanjt107 8 months ago - 2 comments
Labels: Bug, Missing-data, Needs Info, Reduction Operations

#61110 - ENH: Automate reading of data in chunks

Issue - State: open - Opened by acampove 8 months ago - 1 comment
Labels: Enhancement, Needs Info, Closing Candidate

#61068 - BUG: Sorting fails in specific cases with pandas==2.1.1

Issue - State: closed - Opened by nancy-pm 9 months ago - 5 comments
Labels: Bug, Needs Info, Sorting

#61058 - DOC: Pivot() example call incorrectly used and would give "error: duplicate index"

Issue - State: closed - Opened by mheskett 9 months ago - 4 comments
Labels: Reshaping, Error Reporting, Needs Info

#61052 - BUG: sometimes when using ~ and & operators for indexing it evaluated incorrectly

Issue - State: closed - Opened by adamszelestey-se 9 months ago - 6 comments
Labels: Bug, Numeric Operations, Needs Info

#60838 - BUG: Unknown Error - Getting from Databricks SQL Python - From PyArrow module (pyarrow.lib.ArrowException)

Issue - State: open - Opened by Gobi2511 10 months ago - 1 comment
Labels: Bug, IO SQL, Needs Info, Arrow

#60657 - BUG: vulnerabilities found in the latest pandas v2.2.3

Issue - State: closed - Opened by OlgasAcc 11 months ago - 3 comments
Labels: Bug, Needs Info

#60651 - QST:

Issue - State: closed - Opened by ganbaaelmer 11 months ago - 1 comment
Labels: Usage Question, Needs Info, Closing Candidate

#60578 - BUG: Reading Excel File - unsupported operand type(s) for +: 'NoneType' and 'int'

Issue - State: closed - Opened by Pandas-Unimpressed 11 months ago - 6 comments
Labels: Bug, IO Excel, Needs Info, Needs Triage

#60552 - ENH: sklearn.model_selection.ShuffleSplit compatible wit pandas.MultiIndex

Issue - State: closed - Opened by jeiglsperger 11 months ago - 2 comments
Labels: Enhancement, MultiIndex, Needs Info

#60489 - BUG: pd.DataFrame incorrectly aligns Series with mismatched DatetimeIndex after resample (Pandas 2.2.3)

Issue - State: closed - Opened by labodyn 12 months ago - 5 comments
Labels: Bug, Datetime, Needs Info

#60472 - ENH: "forward rolling" - where instead of looking back at previous values, you look ahead at future values

Issue - State: closed - Opened by yotambraun 12 months ago - 1 comment
Labels: Enhancement, Needs Info, Window, Closing Candidate

#60355 - BUG: index.has_duplicates on a subset of a dataframe sometimes returns an incorrect outcome

Issue - State: closed - Opened by HungryZebra563 about 1 year ago - 2 comments
Labels: Bug, Indexing, Needs Info

#60113 - BUG: .replace() won't work on Series if a NaN is found on new string dtype

Issue - State: closed - Opened by ErichMarx about 1 year ago - 5 comments
Labels: Bug, Needs Info

#60092 - BUG: select_dtypes does not work properly with numpy.ndarray

Issue - State: closed - Opened by fjossandon about 1 year ago - 8 comments
Labels: Bug, Needs Info

#60087 - QST: Why is it necessary to not allow `include_groups=True` in future versions for groupby(...).apply(...) operations?

Issue - State: closed - Opened by mattmills49 about 1 year ago - 3 comments
Labels: Groupby, Usage Question, Needs Info, Apply

#60086 - BUG: DataFrame Dict not callabe

Issue - State: open - Opened by kellykayaks about 1 year ago - 1 comment
Labels: Bug, Needs Info

#60017 - QST: how can I save my sparse dataframe with indexes and columns to a format other than .pkl?

Issue - State: closed - Opened by michelkluger about 1 year ago - 3 comments
Labels: Usage Question, Sparse, Needs Info

#59969 - PERF: Possible Memory Leak when Importing Parquet File with PyArrow Engine in Pandas

Issue - State: closed - Opened by Voltagabbana about 1 year ago - 3 comments
Labels: Performance, Needs Info

#59953 - ENH: Is there a way to plot a long format data in matplotlib without pivoting the table ?

Issue - State: closed - Opened by infinity-void6 about 1 year ago - 4 comments
Labels: Visualization, Usage Question, Needs Info, Closing Candidate

#59931 - ENH: Add support to customize time format and more detailed error handling information for to_time

Issue - State: open - Opened by Lzforevr about 1 year ago - 5 comments
Labels: Enhancement, Needs Info, datetime.date

#59845 - BUG: pd.options.future.no_silent_downcasting is not backward compatible

Issue - State: closed - Opened by vityas about 1 year ago - 2 comments
Labels: Bug, Needs Info, Closing Candidate, PDEP6-related

#59831 - ENH: Restore the functionality of `.fillna`

Issue - State: closed - Opened by tomprimozic about 1 year ago - 5 comments
Labels: Enhancement, Missing-data, Dtype Conversions, Needs Discussion, Needs Info, Closing Candidate

#59777 - ENH: Add a clear option to interpret strings as Pandas dtypes specifically.

Issue - State: open - Opened by vitkosbence about 1 year ago - 1 comment
Labels: Enhancement, IO Excel, Strings, Needs Info

#59585 - ENH: `DataFrame.struct.explode(column, *, separator=".")` method to pull struct subfields into the parent DataFrame

Issue - State: open - Opened by tswast about 1 year ago - 2 comments
Labels: Enhancement, Needs Discussion, Needs Info, Arrow

#59504 - BUILD: Python Docker Build Issues

Issue - State: closed - Opened by kevin-secops-lt over 1 year ago - 3 comments
Labels: Build, Needs Info

#59494 - PERF: Excessive memory consumption in pd.read_parquet

Issue - State: closed - Opened by cotZhong over 1 year ago - 3 comments
Labels: Performance, Needs Info, IO Parquet

#59421 - BUG: merging DataFrames on a column containing just NaN values triggers address violation in `safe_sort`

Issue - State: closed - Opened by jsspencer over 1 year ago - 4 comments
Labels: Bug, Reshaping, Needs Info

#59402 - module 'pandas' has no attribute '__version__'

Issue - State: closed - Opened by Ishan-kohli over 1 year ago - 5 comments
Labels: Build, Needs Info

#59382 - BUG: Segmentation Fault in MacOS installed by Pip

Issue - State: closed - Opened by Fazatholomew over 1 year ago - 5 comments
Labels: Bug, Needs Info, OS X

#59293 - BUG: Couldn't run sql: 'Connection' object has no attribute 'cursor'

Issue - State: closed - Opened by Jonathan-Wei over 1 year ago - 5 comments
Labels: Bug, IO SQL, Needs Info

#59252 - BUG: rolling window with `center=True, min_periods=1` is not symmetric at edges

Issue - State: closed - Opened by jack-walp over 1 year ago - 7 comments
Labels: Bug, Needs Info, Window

#59233 - BUG: json_normalize KeyError Key not found

Issue - State: closed - Opened by Opostol over 1 year ago - 3 comments
Labels: Bug, IO JSON, Needs Info

#59180 - PERF: to_excel slowing runtime

Issue - State: closed - Opened by OnindoK over 1 year ago - 2 comments
Labels: Performance, IO Excel, Needs Info

#59045 - BUG: pandas dataframe column definition or mapping does not cater for upper case values.

Issue - State: closed - Opened by c8-devops over 1 year ago - 2 comments
Labels: Bug, Needs Info, Astype

#59024 - BUG: df.all(skipna=False)

Issue - State: closed - Opened by nalgae73 over 1 year ago - 2 comments
Labels: Bug, Needs Info, Closing Candidate

#58952 - BUG: FutureWarning when following documentation

Issue - State: closed - Opened by matthewsqor over 1 year ago - 5 comments
Labels: Docs, Needs Info, PDEP6-related

#58949 - BUG: AttributeError: 'Engine' object has no attribute 'cursor'

Issue - State: closed - Opened by brunolnetto over 1 year ago - 4 comments
Labels: Bug, Needs Info

#58944 - BUILD:

Issue - State: closed - Opened by chandan62 over 1 year ago - 2 comments
Labels: Build, Needs Info

#58860 - BUG: pandas.errors.LossySetitemError when backtesting Freqtrade

Issue - State: closed - Opened by JPeetz over 1 year ago - 2 comments
Labels: Bug, Needs Info

#58849 - BUG: to_excel() cuts off list of values when creating Excel file

Issue - State: closed - Opened by josemariagarcia95 over 1 year ago - 4 comments
Labels: Bug, IO Excel, Needs Info

#58809 - BUG: Segmentation Fault when importing Pandas in python 3.10.14

Issue - State: closed - Opened by bhawmik over 1 year ago - 2 comments
Labels: Build, Needs Info, Segfault

#58502 - BUG: KeyError: 'Step Nr.s'

Issue - State: closed - Opened by paivadanieljl over 1 year ago - 4 comments
Labels: Bug, Needs Info

#58257 - BUG:Characters like '/' are being replaced by '_' when importing a CSV file into Python with pandas.

Issue - State: closed - Opened by harishvspeaker over 1 year ago - 6 comments
Labels: Bug, IO CSV, Needs Info

#58229 - BUG: Errors when running pandas on development environment

Issue - State: closed - Opened by shriyakalakata over 1 year ago - 5 comments
Labels: Build, Needs Info

#57963 - BUG: install pandas on embedded python 3.8 win32 successful, but failed to `import pandas`

Issue - State: closed - Opened by l1t1 over 1 year ago - 6 comments
Labels: Build, Needs Info, 32bit

#57932 - RFE: move away from deprecated `html5lib`

Issue - State: closed - Opened by kloczek over 1 year ago - 3 comments
Labels: IO HTML, Deprecate, Needs Info, Dependencies

#57717 - BUILD: error: metadata-generation-failed; ninja: build stopped: subcommand failed.

Issue - State: closed - Opened by Rand-0 over 1 year ago - 5 comments
Labels: Build, Needs Info

#57681 - BUG: pandas can't detect matplotlib on nanoserver (works fine on servercore)

Issue - State: closed - Opened by robin-deltares over 1 year ago - 2 comments
Labels: Bug, Needs Info

#57468 - Pandas Plot Fails to Open w/ Method Error

Issue - State: closed - Opened by magentoman2009 almost 2 years ago - 6 comments
Labels: Bug, Needs Info

#57432 - DOC: CoW and column addition

Issue - State: closed - Opened by JB-AM almost 2 years ago - 4 comments
Labels: Docs, Needs Info, Copy / view semantics

#57409 - ENH: df.columns returns list of series

Issue - State: closed - Opened by R3dan almost 2 years ago - 6 comments
Labels: Enhancement, Indexing, Needs Info, Closing Candidate

#57197 - BUG: ValueError: Invalid frequency: ME

Issue - State: closed - Opened by celestinoxp almost 2 years ago - 2 comments
Labels: Bug, Needs Info

#57051 - BUG: Inconsistent `to_datetime` behaviour

Issue - State: closed - Opened by abhijeetbodas2001 almost 2 years ago - 3 comments
Labels: Needs Info

#57038 - BUILD: Can't found module wrapt nor detect right meson version

Issue - State: closed - Opened by latot almost 2 years ago - 17 comments
Labels: Build, Needs Info, Closing Candidate

#56942 - PERF: Series.apply is slower on single element dict compared with multi elements dict

Issue - State: closed - Opened by Alexia-I almost 2 years ago - 2 comments
Labels: Performance, Needs Info, Apply

#56932 - BUG: to_dict inconsistency

Issue - State: closed - Opened by moghadas76 almost 2 years ago - 2 comments
Labels: Bug, IO Data, Needs Info

#56903 - PERF: pd.BooleanDtype in row operations is still very slow

Issue - State: open - Opened by Alexia-I almost 2 years ago - 10 comments
Labels: Performance, Needs Info, NA - MaskedArrays, Reduction Operations

#56810 - BUG: read_excel fuction return "zipfile.BadZipFile: File is not a zip file"

Issue - State: closed - Opened by dogeCoinMasterCoin almost 2 years ago - 6 comments
Labels: Bug, IO Excel, Needs Info

#56588 - QST: Roadmap for deprecations of Period types

Issue - State: open - Opened by ChadFulton almost 2 years ago - 8 comments
Labels: Usage Question, Period, Needs Info

#56502 - BUG: Did not expect new dtype datetime64[ns] to equal self.dtype datetime64[ns]

Issue - State: closed - Opened by StefanFrey almost 2 years ago - 2 comments
Labels: Bug, Dtype Conversions, Needs Info

#56463 - BUG: Unsupported cast from string to time64 with pandas 2.1.4

Issue - State: closed - Opened by shobsi almost 2 years ago - 4 comments
Labels: Bug, Needs Info

#56337 - BUG: QST: `pd.read_html` gives tables with duplicated columns

Issue - State: open - Opened by INF800 almost 2 years ago - 1 comment
Labels: Bug, IO HTML, Needs Info, Needs Triage

#56305 - BUILD: Pandas 2.1

Issue - State: open - Opened by celestinoxp almost 2 years ago - 3 comments
Labels: Build, Needs Info

#56302 - BUG: Pandas verbosely prints CSV contents

Issue - State: closed - Opened by susops almost 2 years ago - 5 comments
Labels: Bug, Needs Info

#56119 - BUG: append --> concat

Issue - State: closed - Opened by celestinoxp almost 2 years ago - 2 comments
Labels: Bug, Needs Info

#55988 - BUG: df1=df2.iloc[-1:] When a certain value of DF1 changes, the last line of DF2 follows DF1 on Pandas 2.1.3

Issue - State: closed - Opened by zhangyuxiang12 about 2 years ago - 2 comments
Labels: Bug, Needs Info

#55836 - BUG: _get_dtype doesn't recognize strings

Issue - State: closed - Opened by yoavabadi5S about 2 years ago - 1 comment
Labels: Bug, IO SQL, Strings, Needs Info, Needs Triage

#55808 - DOC: applying elementwise functions part

Issue - State: closed - Opened by theangkko about 2 years ago - 2 comments
Labels: Docs, Needs Info, Closing Candidate

#55648 - ENH:

Issue - State: closed - Opened by GoHuskers about 2 years ago - 3 comments
Labels: Enhancement, Needs Info, Needs Triage

#55624 - BUG:

Issue - State: closed - Opened by bkowshik about 2 years ago - 2 comments
Labels: Bug, Needs Info, Needs Triage

#55610 - BUG: Inconsistent behaviour of the `index` between `to_series` and `to_frame`

Issue - State: closed - Opened by abokey1 about 2 years ago - 3 comments
Labels: Needs Info, Closing Candidate

#55424 - BUILD: Pandas now install dependencies by default that have conflicting licensing with MIT

Issue - State: closed - Opened by 12rambau about 2 years ago - 3 comments
Labels: Build, Needs Info, Upstream issue

#55170 - BUILD: meson build step generate_version.py fails in Docker container in Windows

Issue - State: open - Opened by Agapibr about 2 years ago - 5 comments
Labels: Build, Needs Info

#55143 - BUG: Multiple typing issue with the package

Issue - State: closed - Opened by r-priyam about 2 years ago - 2 comments
Labels: Needs Info, Typing

#54991 - BUG: concat zero-copy breaks

Issue - State: open - Opened by mlkui about 2 years ago - 3 comments
Labels: Bug, Needs Info, Arrow

#54644 - BUG: Install error with Apple ARM and poetry

Issue - State: open - Opened by ValeryVerkhoturov over 2 years ago - 3 comments
Labels: Build, Needs Info

#54373 - PERF: high memory consumption for unstack

Issue - State: closed - Opened by hkad98 over 2 years ago - 9 comments
Labels: Performance, Reshaping, Needs Info

#54274 - BUG: to_sql() insertion issue to Oracle DB

Issue - State: closed - Opened by NKMatha over 2 years ago - 2 comments
Labels: Bug, IO SQL, Needs Info

#54237 - PERF: Large row dataframe process groupby and apply an dataframe returning function, spend a very long exce time even after main loop finished

Issue - State: closed - Opened by yipukangda over 2 years ago - 2 comments
Labels: Groupby, Performance, Needs Info, Apply

#54092 - BUG: No module named 'pandas._libs.properties' when using Python 3.11.2 and pandas=2.0.3

Issue - State: closed - Opened by hrsma2i over 2 years ago - 6 comments
Labels: Build, Needs Info

#54076 - ENH: add missing/infinite values counts in .describe

Issue - State: closed - Opened by lcrmorin over 2 years ago - 4 comments
Labels: Enhancement, Needs Info

#54005 - ENH: vlookup or similar

Issue - State: open - Opened by Cokesalokes over 2 years ago - 1 comment
Labels: Enhancement, Reshaping, Needs Info

#53630 - BUG: Unable to install pandas from nightly on an m2 mac (meson-python not found)

Issue - State: closed - Opened by j-bennet over 2 years ago - 7 comments
Labels: Build, Needs Info, OS X

#53587 - Unexplainable error when trying to run the following pandas code

Issue - State: closed - Opened by Rehan587 over 2 years ago - 3 comments
Labels: Needs Info

#53560 - QST: What is the canonical way to convert a column of type `string[pyarrow]` to boolean within a pandas dataframe?

Issue - State: open - Opened by jamesowers-roo over 2 years ago - 1 comment
Labels: Usage Question, Needs Info, replace, Needs Triage

#53534 - BUG:

Issue - State: open - Opened by koopa31 over 2 years ago - 2 comments
Labels: Bug, IO Excel, Needs Info, Closing Candidate