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GitHub / pandas-dev/pandas issues and pull requests

Labelled with: Usage Question

#61607 - QST: Subject: User Experience Issue - NumPy Types in DataFrame Results Breaking Readability

Issue - State: open - Opened by COderHop 5 months ago - 2 comments
Labels: Usage Question, Needs Triage

#61598 - BUG: Dangerous inconsistency: `~` operator changes behavior based on context outside a target.

Issue - State: closed - Opened by monagai 6 months ago - 3 comments
Labels: Usage Question

#61424 - i want to develop one feature in pandas

Issue - State: closed - Opened by Sunil5411 6 months ago - 2 comments
Labels: Usage Question, Needs Triage

#61362 - QST: best way to extend/subclass pandas.DataFrame

Issue - State: open - Opened by rwijtvliet 7 months ago
Labels: Usage Question, Needs Triage

#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

#60651 - QST:

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

#60602 - QST: Does the project consider DataFrame.query() arbitrary code execution to be a security vulnerability?

Issue - State: closed - Opened by nickodell 11 months ago - 8 comments
Labels: Usage Question, expressions, Closing Candidate

#60456 - QST: Request for a method to map test functions to the functions they test

Issue - State: closed - Opened by angiolye24 12 months ago - 3 comments
Labels: Usage Question, Closing Candidate

#60438 - QST: when I import pandas as pd then i get an error

Issue - State: closed - Opened by Anamika1jan 12 months ago - 1 comment
Labels: Usage Question, Needs Triage

#60163 - QST: Why Doesn't Pandas Have an Insert Index Function or Method?

Issue - State: closed - Opened by MasonDye about 1 year ago - 1 comment
Labels: Usage Question, Needs Triage

#60139 - QST: Is pandas.to_sql considered an ORM?

Issue - State: closed - Opened by Negroni1 about 1 year ago - 1 comment
Labels: Usage Question, Needs Triage

#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

#60059 - QST: Will pandas 3 support python 3.10?

Issue - State: open - Opened by wirable23 about 1 year ago
Labels: Usage Question, Needs Triage

#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

#60016 - BUILD: pandas fails to install with python-freethreading 3.13.0 final release

Issue - State: open - Opened by djakubiec about 1 year ago - 2 comments
Labels: Build, Usage Question, Upstream issue

#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

#59824 - QST: how to pandas fast nested for loop for "non numeric" columns?

Issue - State: closed - Opened by ganbaaelmer about 1 year ago - 1 comment
Labels: Usage Question, Needs Triage

#59716 - QST: DataFrame.plot() vs Series.plot() have inconsistency wrt reuse plot

Issue - State: open - Opened by pollo-coder about 1 year ago
Labels: Usage Question, Needs Triage

#59715 - QST: Consistently Apply Welford Method and Kahan Summation in roll_xxx Functions

Issue - State: open - Opened by kaixiongg about 1 year ago
Labels: Usage Question, Needs Triage

#59575 - BUG: StringDtype conversion to bool changes False to True

Issue - State: closed - Opened by snaumann42 about 1 year ago - 3 comments
Labels: Usage Question, Strings

#59445 - QST: How to use 'numba' for group by sum

Issue - State: open - Opened by acmilannesta over 1 year ago
Labels: Usage Question, Needs Triage

#59351 - QST: How does pandas ensure backward compatibility with numpy and other deps

Issue - State: closed - Opened by maxkoretskyi over 1 year ago - 1 comment
Labels: Usage Question, Needs Triage

#59270 - BUILD: Pandas 1.5.3 is unusable due to incompatibility with Numpy 2.0.0

Issue - State: closed - Opened by rsayn over 1 year ago - 1 comment
Labels: Build, Usage Question

#59166 - QST: Critical Vulnerability detection in pandas Library by Fortify due to read_pickle function

Issue - State: closed - Opened by franciscosanchezoliver over 1 year ago - 2 comments
Labels: Usage Question, Needs Triage

#59149 - database is locked

Issue - State: closed - Opened by Happiness-in-Danger over 1 year ago - 1 comment
Labels: Usage Question, Needs Triage

#59020 - QST: This library always worked, except with this specific .sav file, anyone could give me a clue on why?

Issue - State: closed - Opened by seizoux over 1 year ago - 1 comment
Labels: Usage Question, Needs Triage

#58930 - QST:

Issue - State: open - Opened by phan480 over 1 year ago
Labels: Usage Question, Needs Triage

#58737 - BUG: "styler.format.thousands" option doesn't work for integers

Issue - State: closed - Opened by vladpy8 over 1 year ago - 3 comments
Labels: Usage Question, Closing Candidate

#58315 - QST: Why is subtracting pandas.timedelta from pandas.date not vectorized?

Issue - State: open - Opened by MinaMirz over 1 year ago - 7 comments
Labels: Datetime, Usage Question, Closing Candidate

#58306 - ENH: An option to stop appending .0 to strings if null is present in json

Issue - State: closed - Opened by Pontus-St over 1 year ago - 1 comment
Labels: Usage Question, IO JSON

#58277 - QST: Why we have not Added CMake Build Support to Pandas

Issue - State: open - Opened by priyapandey26 over 1 year ago
Labels: Usage Question, Needs Triage

#58142 - QST: loc returns matrix with one row when index is not strictly unique

Issue - State: open - Opened by Laubeee over 1 year ago
Labels: Usage Question, Needs Triage

#58061 - QST: somthing weird in using groupby.rolling.apply(function)

Issue - State: open - Opened by Li-xy-lucky over 1 year ago
Labels: Usage Question, Needs Triage

#57953 - BUG: pandas df.to_markdown() with period at end of field - is not displayed.

Issue - State: closed - Opened by dwgillies over 1 year ago - 2 comments
Labels: Bug, IO Data, Usage Question, Closing Candidate

#57882 - QST：pandas.groupby().diff()

Issue - State: closed - Opened by zybmiximixi over 1 year ago - 1 comment
Labels: Usage Question, Needs Triage

#57734 - QST: How to solve pandas (2.2.0) "FutureWarning: Downcasting behavior in `replace` is deprecated" on a Series?

Issue - State: closed - Opened by buhtz over 1 year ago - 23 comments
Labels: Docs, Usage Question

#57642 - QST: Grouping at fixed time intervals (hours and minutes) regardeless the date and the first row time

Issue - State: open - Opened by fede72bari over 1 year ago
Labels: Usage Question, Needs Triage

#57498 - QST: How to encrypt pandas.DataFrame data with AES algorithm?

Issue - State: closed - Opened by snowuyl over 1 year ago - 2 comments
Labels: Usage Question, Needs Triage

#57313 - Float64 converted Int64 values are roundedoff due to None

Issue - State: closed - Opened by arunkumaralagesan almost 2 years ago - 4 comments
Labels: Missing-data, Usage Question, Needs Triage, Closing Candidate

#57260 - QST: The concept behind how hashes are combined in pandas?

Issue - State: open - Opened by phphuc612 almost 2 years ago
Labels: Usage Question, Needs Triage

#57244 - QST: How to become a Collaborator?

Issue - State: closed - Opened by MesumRaza almost 2 years ago - 1 comment
Labels: Usage Question, Needs Triage

#57037 - BUG: Wrong column types when query has no rows in read_sql

Issue - State: closed - Opened by latot almost 2 years ago - 3 comments
Labels: Usage Question, IO SQL

#57033 - QST: FutureWarning: Resampling with a PeriodIndex is deprecated, how to resample now?

Issue - State: open - Opened by andreas-wolf almost 2 years ago
Labels: Usage Question, Needs Triage

#56956 - QST: Why does it seem like importing pandas spawns a process per logical core of your CPU?

Issue - State: closed - Opened by kszlim almost 2 years ago - 1 comment
Labels: Usage Question, Needs Triage

#56710 - BUILD: Pandas failed to install

Issue - State: closed - Opened by oddbookworm almost 2 years ago - 2 comments
Labels: Build, Usage Question

#56678 - BUG: precision losing in frame creation when data contains large integers and missing values

Issue - State: closed - Opened by paralyzah almost 2 years ago - 7 comments
Labels: Dtype Conversions, Usage Question, Closing Candidate

#56630 - QST: stack overflow

Issue - State: closed - Opened by rudresh09 almost 2 years ago - 1 comment
Labels: Usage Question, Needs Triage

#56602 - QST: need help

Issue - State: closed - Opened by naman8989 almost 2 years ago - 1 comment
Labels: Usage Question, Needs Triage

#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

#56560 - QST: Questions about HDF5 support of pandas

Issue - State: open - Opened by gapplef almost 2 years ago
Labels: Usage Question, Needs Triage

#55975 - QST: Pandas

Issue - State: closed - Opened by wasimtikki120 about 2 years ago - 1 comment
Labels: Usage Question, Needs Triage

#55970 - QST: Why Nullable integer data columns can not combine in one block?

Issue - State: closed - Opened by Shanxce about 2 years ago - 2 comments
Labels: Usage Question, Ice Cream Agreement

#55891 - QST: Why import pandas create threads?

Issue - State: closed - Opened by PaleNeutron about 2 years ago
Labels: Usage Question, Needs Triage

#55881 - QST: Using a chunksize iterator with StataWriter for very large queries

Issue - State: open - Opened by FlipperPA about 2 years ago - 1 comment
Labels: Usage Question, Needs Triage

#55875 - BUILD: Installing pandas on armv7l python3.9

Issue - State: closed - Opened by hzm74 about 2 years ago - 2 comments
Labels: Build, Usage Question

#55681 - QST: best practices to combine groupby rolling and apply

Issue - State: closed - Opened by randomgambit about 2 years ago - 3 comments
Labels: Usage Question, Apply, Window

#55542 - BUG: pd.options.display.date_dayfirst = True is not working as expected

Issue - State: open - Opened by hackaholic about 2 years ago - 2 comments
Labels: Output-Formatting, Usage Question, Needs Triage

#55480 - BUILD: Slow pip resolver when installing `pandas[aws]` and `boto3`

Issue - State: closed - Opened by ketozhang about 2 years ago - 2 comments
Labels: Build, Usage Question, Closing Candidate, Upstream issue

#55452 - BUG: hash_pandas_object(obj).sum() changed value with pandas 2.1.0

Issue - State: closed - Opened by hagenw about 2 years ago - 3 comments
Labels: Usage Question, Closing Candidate

#55371 - QST: How to convert large queryset into dataframes in optimized way?

Issue - State: open - Opened by hitesh-scanova about 2 years ago
Labels: Usage Question, Needs Triage

#55287 - QST: get the last one value in a dataframe's certain column

Issue - State: closed - Opened by jie235 about 2 years ago - 1 comment
Labels: Usage Question, Needs Triage

#55272 - BUG: skipna keyword no longer accepted by rolling().sum()

Issue - State: closed - Opened by LeoLi2002 about 2 years ago - 3 comments
Labels: Missing-data, Usage Question, Window

#55215 - Why doesn't the .at() function work for pandas?

Issue - State: closed - Opened by EdwinVonLemberg about 2 years ago - 2 comments
Labels: Usage Question, Needs Triage

#55188 - BUG: DataFrame.style.to_latex() does not allow `index=False` as a parameter and does not return consistent

Issue - State: closed - Opened by xhluca about 2 years ago - 5 comments
Labels: Usage Question, Styler, Closing Candidate

#55146 - BUG: ModuleNotFoundError: No module named 'mesonpy'

Issue - State: closed - Opened by LukeLIN-web about 2 years ago - 6 comments
Labels: Build, Usage Question, Closing Candidate

#55060 - ENH: column nicknames or shorthands

Issue - State: closed - Opened by tennlee about 2 years ago - 6 comments
Labels: Usage Question, metadata, Closing Candidate

#54645 - BUG: tz_convert doesn't work for multiple timezones

Issue - State: closed - Opened by user293811 over 2 years ago - 2 comments
Labels: Timeseries, Usage Question

#54178 - BUILD: `ValueError` raised when importing pandas due to `numpy.ndarray` size change

Issue - State: closed - Opened by luke396 over 2 years ago - 1 comment
Labels: Build, Usage Question

#53928 - BUG: TypeError: cannot safely cast non-equivalent object to uint32

Issue - State: closed - Opened by ppt000 over 2 years ago - 2 comments
Labels: Dtype Conversions, Usage Question

#53713 - QST: How to prepare my data to avoid being unable to infer frequency

Issue - State: closed - Opened by jambudipa over 2 years ago - 1 comment
Labels: Usage Question, Needs Triage

#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

#53433 - Split Multiple Header into CSV file

Issue - State: closed - Opened by mhd-fauzan over 2 years ago - 5 comments
Labels: Usage Question, IO CSV, Closing Candidate

#53302 - recognize header position and extract header info

Issue - State: closed - Opened by mhd-fauzan over 2 years ago - 1 comment
Labels: Usage Question, IO CSV, Closing Candidate

#53285 - BUG: read_csv parsing error with double pipe ("||") separator

Issue - State: closed - Opened by inbal-afori over 2 years ago - 2 comments
Labels: Usage Question, IO CSV

#53249 - BUG: Failure to Process 1 Billion Rows Parquet File Using Version 2.0.1

Issue - State: closed - Opened by hkpeaks over 2 years ago - 7 comments
Labels: Usage Question, IO Parquet, Closing Candidate

#53162 - QST:

Issue - State: closed - Opened by tarun18920 over 2 years ago - 2 comments
Labels: Usage Question

#53127 - BUG: astype not working correctly for similar datetime format

Issue - State: open - Opened by dipen-shrestha-ttm over 2 years ago - 2 comments
Labels: Timeseries, Dtype Conversions, Usage Question

#53065 - How to display dataframe from csv file with OOP method

Issue - State: closed - Opened by mhd-fauzan over 2 years ago - 1 comment
Labels: Usage Question, Needs Triage

#52622 - QST: Qcut and Interval Question

Issue - State: closed - Opened by rm17tink over 2 years ago - 2 comments
Labels: Usage Question, Needs Info, cut, Closing Candidate

#52558 - BUG: typeerror: datetime64 type does not support sum operations

Issue - State: closed - Opened by muazhari over 2 years ago - 9 comments
Labels: Bug, Usage Question

#52270 - DOC: read_csv with skiprows parameter skips from current position, not from start of file

Issue - State: closed - Opened by Black-Maille over 2 years ago - 3 comments
Labels: Docs, Usage Question, Needs Info

#51633 - QST: How can I use df.to_sql() with SQLAlchemy AsyncSession/AsyncEgine

Issue - State: closed - Opened by lamhktommy over 2 years ago - 3 comments
Labels: Usage Question, Needs Triage

#51495 - QST: With to_dict method, whether support batch transfer pd.NA in dataframe to None in dict value

Issue - State: closed - Opened by flyly0755 over 2 years ago - 4 comments
Labels: Usage Question, Needs Info, Needs Triage

#50603 - QST: Is there a work-around for repeated FutureWarnings?

Issue - State: open - Opened by stev-0 almost 3 years ago - 8 comments
Labels: Usage Question, Warnings

#50340 - QST: pandas read_json from s3 with chunksize option returns single row multiple columns dataframe

Issue - State: closed - Opened by abhilasharevur almost 3 years ago - 3 comments
Labels: Usage Question, Needs Triage

#50206 - TYP: Make better type hints for using register_dataframe_accessor

Issue - State: closed - Opened by alixtc almost 3 years ago - 3 comments
Labels: Usage Question, Typing, Closing Candidate, Accessors

#50000 - QST: Prerequisites to understand pandas-dev/pandas repo

Issue - State: closed - Opened by jmferreirab almost 3 years ago - 9 comments
Labels: Build, Usage Question

#49723 - BUG: hrules and clines in .to_latex() draw two lines at bottom of table

Issue - State: closed - Opened by stevenlis about 3 years ago - 3 comments
Labels: Usage Question, IO LaTeX, Styler

#49130 - QST: DF row fields with strings containing single quotes aren't properly escaped or outer quoted

Issue - State: closed - Opened by ANTGOMEZ about 3 years ago - 1 comment
Labels: Usage Question, Needs Triage

#47112 - BUG or DOC: NaNs generated when enlarge DataFrame with loc[:, cols] with a DataFrame RHS

Issue - State: closed - Opened by sappersapper over 3 years ago - 2 comments
Labels: Indexing, Usage Question

#47098 - BUG: Join() Does NOT Preserve Calling DataFrame Index Orders with Multi-Index

Issue - State: closed - Opened by changxin-ge over 3 years ago - 2 comments
Labels: Reshaping, Usage Question, MultiIndex, Closing Candidate

#47094 - BUG: pd.Series.mode failed to give expected result when it is embedded inside groupby.transform

Issue - State: closed - Opened by Fanghaozhi-Liang over 3 years ago - 2 comments
Labels: Usage Question, Closing Candidate

#47054 - BUG: unexpected strange behaviour with pandas and numpy compatibility

Issue - State: closed - Opened by moroclash over 3 years ago - 1 comment
Labels: Usage Question

#46978 - BUG: get_loc with partial string index does not return error

Issue - State: closed - Opened by MortGron over 3 years ago - 4 comments
Labels: Indexing, Usage Question

#46895 - Leading zeros in data for read_excel vs read_csv

Issue - State: closed - Opened by ppinkhasov over 3 years ago - 4 comments
Labels: Usage Question, IO Excel