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pandas users keep filing bugs

Data engineering16 posts from 11 people11d active+33 posts in the last 7 days, 2 the 7 days before (steady)

Posts per day

Posts per day16 posts, Aug 27 to Sep 25

The posts behind it

16, newest first
PostDate
t2bpandas-dev/pandasutsab345Sep 24yesterday
tbpandas-dev/pandasutsab345Sep 24yesterday
API: should the _supports_2d contract require repeat(axis=...)?...path. No in-tree caller passes `axis=` to an ExtensionArray's `repeat` today, so nothing is broken right now; this is about whether such a call is legitimate going forward.pandas-dev/pandasjbrockmendelSep 205 days ago
DOC: Incorrect missing-value representation in Python StringDtype documentation### Pandas version checks - [x] I have checked that the issue still exists on the latest versions of the docs on `main` [here](https://pandas.pydata.org/docs/dev/) ### Location of the documentation https://github.com/pandas-dev/pandas/blob/main/doc/source/user_guide/text.rst ###...pandas-dev/pandassanjyaySep 187 days ago
Pandas 'drop_duplicates' not removing rowsI am reading a csv into a dataFrame with the goal of filtering duplicate entries and storing their id's. csv: . Name,Hash,Id,Tag,Rarity,Tier,Type,Source,Archetype,Tertiary Stat,Tuning Stat AION Adapter Bond,119770768,"""6917530158183792231""",,Legendary,5,Warlock...Stack Overflow [pandas]SwankyTigerSep 178 days ago
ERR: assert_numpy_array_equal gives confusing assertion message for NaT with different unitExample: In general, if we raise when the unit is not the same, we should report this mismatching unit instead.pandas-dev/pandasjorisvandenbosscheSep 112 weeks ago
BUG: IntervalIndex set ops and astype/constructor raise TypeError when passed a RangeIndex### Pandas version checks - [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas. - [x] I have confirmed this bug exists on the [main...pandas-dev/pandasdevloper961-makerSep 92 weeks ago
BUG: .to_latex() throws an exception in some cases...IPython : 9.16.1 adbc-driver-postgresql: None adbc-driver-sqlite : None bs4 : 4.15.0 bottleneck : 1.6.0 fastparquet : None fsspec : 2026.7.0 html5lib : 1.1 hypothesis : 6.151.9 gcsfs : None jinja2 : 3.1.6 lxml.etree : 6.1.1 matplotlib : 3.11.1 numba : None numexpr : 2.14.1 odfpy...pandas-dev/pandasjose-matosSep 82 weeks ago
BUILD: window/meson.build never passes --shared=pandas._libs._cyutility to its extensions`pandas/_libs/window/meson.build` opens with but both `py.extension_module` calls in that file pass `cython_args: cy_args`. The `+=` lands on `cython_args`, the variable inherited from `pandas/_libs/meson.build` (which already appends the same flag there), so the flag never...pandas-dev/pandasjbrockmendelSep 43 weeks ago
BUILD: pyproject.toml banned-api comment is wrong — TID251 does resolve np.random through the alias`pyproject.toml` carries this in `[tool.ruff.lint.flake8-tidy-imports.banned-api]`: The premise is false. TID251 resolves qualified names through aliased module imports, so with `import numpy as np` a `"numpy.random"` entry does flag `np.random.rand()` at the call site. Verified...pandas-dev/pandasjbrockmendelSep 43 weeks ago
Pandas is eagerly imported as a result of cache_policies.py### Bug summary [`_register_stable_transforms()`](https://github.com/PrefectHQ/prefect/blob/3a128c2b55d57bf30f9db28c2148bba5e5b6c145/src/prefect/cache_policies.py#L404) in `cache_policies.py` eagerly imports pandas if a user happens to have it installed in their environment...PrefectHQ/prefectgabelsohnSep 13 weeks ago
BUG: IndexError with certain subplot order in stacked barchart...IPython : 9.16.1 adbc-driver-postgresql: None adbc-driver-sqlite : None bs4 : 4.15.0 bottleneck : None fastparquet : None fsspec : None html5lib : None hypothesis : None gcsfs : None jinja2 : 3.1.6 lxml.etree : 6.1.1 matplotlib : 3.11.1 numba : 0.67.0 numexpr : None odfpy : None...pandas-dev/pandasjnettelsSep 13 weeks ago
BUG: IntervalDtype.__from_arrow__ ignores the struct-level validity bitmap### Reproducible Example ### Issue Description The second entry is null in the arrow array but reads back as `(0.0, 0.0]` instead of NA. `IntervalDtype.__from_arrow__` reads only `arr.field("left")` / `arr.field("right")`. pyarrow's `StructArray.field()` does not merge the...pandas-dev/pandasjbrockmendelSep 13 weeks ago
Append column from multiple pandas dataframes while retaining filename...file for each column rather than the column name in the original file ( i0_nanoamps ). Is there a way to adjust the code to manage this?. dfs=[] for file in Ion_chambers_worked: df1 = pd.read_csv(path+'/'+file,sep=' ',engine='python') i0=pd.DataFrame(df1['i0_nanoamps'])...Stack Overflow [pandas]AnmeAug 284 weeks ago
BUG: Issues with stacked/grouped bars in subplot charts### Pandas version checks - [x] I have checked that this issue has not already been reported. - [x] I have confirmed this bug exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas. - [x] I have confirmed this bug exists on the [main...pandas-dev/pandasjnettelsAug 284 weeks ago
DOC: Pluralise word in 'axis' parameter explanation for dropna() function### Pandas version checks - [x] I have checked that the issue still exists on the latest versions of the docs on `main` [here](https://pandas.pydata.org/docs/dev/) ### Location of the documentation...pandas-dev/pandasa-s-russoAug 274 weeks ago

Companies and products named

Company or productPosts naming it
pandas16
GitHub3
PostgreSQL3
SQLite3
Prefect1
About this problem

Evidence

16 posts from 11 people in 3 places, about 3 a week over 29 days. Mostly on pandas-dev/pandas, Stack Overflow [pandas], PrefectHQ/prefect. Tools named alongside: GitHub, PostgreSQL, SQLite, Prefect.

Frustration Frustration 0 of 3· Seen on GitHub issues, Stack Overflow

How it was grouped

Posts about pandas that state a pain but match no known issue yet. First post Aug 27, 2026, latest Sep 24, 2026. Corroborated: 3 or more posts from 2 or more people or places. Method

History

  • 2026-09-25 Statement: pandas users keep asking for help to pandas users keep filing bugs
  • 2026-09-25 Momentum: fading to steady
  • 2026-09-25 Added: pandas users keep asking for help (4 posts)

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