Problemsby Glyphpandas deprecations force unplanned migrations
7 posts from 6 people7d activeFading, +0 this week
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DEPR: scatter_matrix, radviz, andrews_curves, bootstrap_plot, parallel_coordinates, lag_plot, autocorrelation_plot
Related to https://github.com/pandas-dev/pandas/issues/50059#issuecomment-6480576480, IIRC from the dev call there was some appetite to deprecate the "fringe" or "specific" plotting functions from `pandas.plotting` * `scatter_matrix` * `radviz` * `andrews_curves` *...
Pandas deprecated inplace parameter
**Describe the bug** Pandas 3 is deprecating the `inplace` parameter of it's DataFrame methods. The method `drop` has already deprecated it. Pandera uses that combination for the pandas backend in the method `DataFrameSchemaBackend.strict_filter_columns` specifically here:...
BUG/DEPR: setitem with `range` indexer does numpy-advanced indexing instead of orthogonal indexing (single block case)
From https://github.com/pandas-dev/pandas/pull/68643#issuecomment-5689432883 It is apparently long standing behaviour when you pass a `range` object that it is doing numpy-style advanced vectorized indexing: While other types (integer keys, slice, mask, etc) are doing the...
ENH: NDFrame.ax accessor for Index method pass-through
Reviving a variant of #52461. A common operation is We already have some NDFrame methods that inline this to return the new `df`: tz_localize, tz_convert, to_period, to_timestamp, swaplevel, reorder_levels, droplevel, rename_axis. #34254 is a request to add `to_flat_index` to...
API/DEPR: what does infer_dtype of "mixed-integer" mean?
...a bug) - in strings.accesor we use it to see if we should allow the .str accessor (looks buggy) - in arrays.boolean we use it to see if we can cast to BooleanArray (looks buggy) - in Index._should_fallback_to_positional it determines how we treat integer keys (looks buggy) I'm...
ENH: ArrowExtensionArray should be supported by HDFStore
...For a minimal working example (not working) - to test with both pa.array examples: ### Feature Description The cheapest solution is to add below the branch https://github.com/pandas-dev/pandas/blob/4fde542d9691acc218c6293165619dcb397e6a8b/pandas/io/pytables.py#L4024 . ###...
API: Add reduction methods to ExtensionArray
This is a follow-up to #64450 which was implemented in #63512. The PR implemented reduction methods like `sum`, `min`, `mean`, ... for some internal EAs. It also implements the...
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About this problem
Evidence
7 posts from 6 people in 2 places, about 1 a week over 58 days. Mostly on pandas-dev/pandas, unionai-oss/pandera. Tools named alongside: GitHub.
Frustration Frustration 0 of 3· Seen on GitHub issues
How it was grouped
Posts that state a pain and match the "deprecation" rule about pandas. First post Sep 2, 2026, latest Oct 29, 2026. Corroborated: 3 or more posts from 2 or more people or places. Method
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Other pandas problems
pandas users keep filing bugs
Top post: ".to_latex() throws an exception in some cases", one of 26 posts from 19 people on GitHub issues, Stack Overflow, Reddit.
pandas upgrades break working setups
10 posts from 10 people on GitHub issues.
Trouble with pandas dataframe
Top post: "HDFStore.select with where=cat == None returns empty DataFrame for Categorical columns instead of matching", one of 8 posts from 7 people on GitHub issues, Stack Overflow.
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Top post: "Series arithmetic ops with PyArrow dtypes and scalars can upcast", one of 5 posts from 4 people on GitHub issues, Stack Overflow.
Trouble with pandas read
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Trouble with pandas raises
Top post: "read_csv with usecols raises IndexError in low-memory mixed-dtype warning path", one of 5 posts from 5 people on GitHub issues.
pandas error messages are cryptic
5 posts from 5 people on GitHub issues.
Trouble with pandas index
Top post: "DOC: document `pd.Index.to_flat_index`", one of 4 posts from 4 people on GitHub issues.
Trouble with pandas instead
Top post: "`pd.merge` gives `float`s instead of integer extensions", one of 4 posts from 4 people on GitHub issues.
Critical work in pandas is fragile and manual
4 posts from 4 people on GitHub issues.
pandas builds are slow or flaky
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Trouble with pandas dtype
Top post: "pd.to_numeric with errors=coerce fails to produce actual NA values when applied to dtype string[pyarrow]", one of 3 posts from 3 people on GitHub issues.
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