Problemsby GlyphTrouble with pandas instead
4 posts from 4 people4d activeFading, +0 this week
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The posts behind it
Malformed post_processing options return 500 instead of 400 for ValueError, KeyError and AttributeError
### Bug description A malformed `post_processing` option returns **HTTP 500** instead of 400. Fuzzing the options of every operation found 39 distinct sites that reach `app.errorhandler(Exception)`; 38 of them are bad requests that should be 400, and 1 (a missing scipy) is...
BUG: Series/DataFrame.replace with a callable value silently stores the function instead of applying or rejecting it
Passing a callable as `value` to `replace` stores the function object as the replacement data. It neither applies it nor raises: Same for exact match without regex and for `DataFrame.replace`. Reproduced on 3.0.5. `Series.str.replace` with the same arguments returns `["aX",...
TST: set LC_TIME in the test body instead of skipping under skip_if_not_english_lc_time
Follow-up to GH-67471, where this was raised in review and deferred ("OK in a follow up"). GH-67471 replaced `td.skip_if_not_us_locale` - which tested `locale.getlocale()[0] != "en_US"`, i.e. the *name* of `LC_CTYPE`, unrelated to what it was gating - with...
BUG: `pd.merge` gives `float`s instead of integer extensions
...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 : None matplotlib : None numba : None numexpr : None odfpy : None...
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About this problem
Evidence
4 posts from 4 people in 2 places, about 1 a week over 33 days. Mostly on pandas-dev/pandas, apache/superset. Tools named alongside: PostgreSQL, SQLite, GitHub, Oracle.
Frustration Frustration 0 of 3· Seen on GitHub issues
How it was grouped
Posts about pandas with no known issue, sharing the word "instead". First post Sep 1, 2026, latest Oct 3, 2026. Corroborated: 3 or more posts from 2 or more people or places. Method
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