instance_id stringlengths 15 28 | file_changes listlengths 1 66 | repo stringclasses 11
values | base_commit stringlengths 40 40 | problem_statement stringlengths 23 39.4k | patch stringlengths 252 140k |
|---|---|---|---|---|---|
pandas-dev__pandas-53787 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/reshape/reshape.py:_stack_multi_columns"
],
"edited_modules": [
"pandas/core/reshape/reshape.py:_stack_multi_columns"
]
},
"file": "pandas/core/reshape/resh... | pandas-dev/pandas | af83376640ec7d86cb3166d0e01052dc6648bfdf | BUG: DataFrame.stack sorts columns
```
mi = MultiIndex(
levels=[["foo", "bar"], ["one", "two"], ["a", "b"]],
codes=[[0, 0, 1, 1], [0, 1, 0, 1], [1, 0, 1, 0]],
names=["first", "second", "third"],
)
s = Series(0, index=mi)
unstacked = s.unstack([1, 2])
print(unstacked)
# second one two
# third b ... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index 2436d91690ed3..6c3316629ce22 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -495,9 +495,9 @@ Reshaping
- Bug in :meth:`DataFrame.idxmin` and :meth:`DataFrame.idxmax`, where the axis dtype would be lo... |
pandas-dev__pandas-53769 | [
{
"changes": {
"added_entities": [
"pandas/core/indexing.py:_LocationIndexer._check_deprecated_callable_usage"
],
"added_modules": null,
"edited_entities": [
"pandas/core/indexing.py:_LocationIndexer.__setitem__",
"pandas/core/indexing.py:_LocationIndexer.__getite... | pandas-dev/pandas | b8fc8cdbf540d7e29e305358c5f2e378a0e9e635 | BUG: iloc-indexing with callable has inconsistent semantics if the return type is a tuple
### 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.
- [ ] I... | diff --git a/doc/source/user_guide/indexing.rst b/doc/source/user_guide/indexing.rst
index 7541cf3c8af3c..7b839d62ddde9 100644
--- a/doc/source/user_guide/indexing.rst
+++ b/doc/source/user_guide/indexing.rst
@@ -62,6 +62,8 @@ of multi-axis indexing.
* A boolean array (any ``NA`` values will be treated as ``False`... |
pandas-dev__pandas-53223 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/generic.py:NDFrame.interpolate"
],
"edited_modules": [
"pandas/core/generic.py:NDFrame"
]
},
"file": "pandas/core/generic.py"
}
] | pandas-dev/pandas | 3cfd8685ee7fddba819932c92884427ee9a78866 | BUG: inplace ignored for empty DataFrame by DataFrame.interpolate
### 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.
- [ ] I have confirmed this bug... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index b6c13c287d5f9..4d57572298b66 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -371,6 +371,7 @@ Indexing
Missing
^^^^^^^
+- Bug in :meth:`DataFrame.interpolate` ignoring ``inplace`` when :class:`Data... |
pandas-dev__pandas-54130 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/dtypes/dtypes.py:ArrowDtype.type"
],
"edited_modules": [
"pandas/core/dtypes/dtypes.py:ArrowDtype"
]
},
"file": "pandas/core/dtypes/dtypes.py"
}
] | pandas-dev/pandas | 6e7025d50dbb1c669cddc557f8a1a9682de72fdc | BUG: repr of DataFrame fails when using ArrowDtype with arrow extension type
Using pandas latest main branch ('2.1.0.dev0+1159.gc126eeb392' at the time of writing) and pyarrow 12.0.1, when you construct a column using the `ArrowDtype` extension dtype where the pyarrow type is a pyarrow extension type, the repr of DataF... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index 31293a42a3977..ed546187d721c 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -598,6 +598,7 @@ ExtensionArray
- Bug in :meth:`Series.quantile` for pyarrow temporal types raising ArrowInvalid (:issue:`5... |
pandas-dev__pandas-50375 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/groupby/groupby.py:GroupBy._bool_agg",
"pandas/core/groupby/groupby.py:GroupBy.std",
"pandas/core/groupby/groupby.py:GroupBy._get_cythonized_result"
],
"edited_mo... | pandas-dev/pandas | 2e224c7e57870196e47fc8656713834f3d8afa41 | BUG: groupby.std() casts to float64
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the latest version of pandas.
- [x] (optional) I have confirmed this bug exists on the master branch of pandas.
---
This came out of https://github.com/pandas-dev... | diff --git a/doc/source/whatsnew/v2.0.0.rst b/doc/source/whatsnew/v2.0.0.rst
index 0ef5636a97d40..3140b0af19966 100644
--- a/doc/source/whatsnew/v2.0.0.rst
+++ b/doc/source/whatsnew/v2.0.0.rst
@@ -82,7 +82,7 @@ be set to ``"pyarrow"`` to return pyarrow-backed, nullable :class:`ArrowDtype` (
Other enhancements
^^^^^^^... |
pandas-dev__pandas-47504 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/io/xml.py:_LxmlFrameParser._iterparse_nodes"
],
"edited_modules": [
"pandas/io/xml.py:_LxmlFrameParser"
]
},
"file": "pandas/io/xml.py"
}
] | pandas-dev/pandas | 5e3d0ed0ce02e61af6b0266f88cbb78a6278363c | BUG: read_xml iterparse doesn't handle multiple toplevel elements with lxml parser
### 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 c... | diff --git a/pandas/io/xml.py b/pandas/io/xml.py
index 78fbeaad09300..9398e995c81ce 100644
--- a/pandas/io/xml.py
+++ b/pandas/io/xml.py
@@ -693,7 +693,7 @@ def _iterparse_nodes(self) -> list[dict[str, str | None]]:
row = None
elem.clear()
- while elem.getprevious(... |
pandas-dev__pandas-51947 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/reshape/merge.py:_MergeOperation._maybe_coerce_merge_keys"
],
"edited_modules": [
"pandas/core/reshape/merge.py:_MergeOperation"
]
},
"file": "pandas/core/r... | pandas-dev/pandas | 7ab6f8b6a86e36d72b119ac9b4dc3fe4c4cf813f | ENH: More helpful error messages for merges with incompatible keys
### Feature Type
- [ ] Adding new functionality to pandas
- [X] Changing existing functionality in pandas
- [ ] Removing existing functionality in pandas
### Problem Description
I wish error messages for erroneous joins were more helpful when the ... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index 7e8403c94ceef..b3ea6fbd4ae2d 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -32,7 +32,8 @@ Other enhancements
- :meth:`MultiIndex.sortlevel` and :meth:`Index.sortlevel` gained a new keyword ``na_posi... |
pandas-dev__pandas-57116 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/arrays/string_.py:StringArray.value_counts"
],
"edited_modules": [
"pandas/core/arrays/string_.py:StringArray"
]
},
"file": "pandas/core/arrays/string_.py"
... | pandas-dev/pandas | 9008ee5810c09bc907b5fdc36fc3c1dff4a50c55 | BUG: Series.value_counts with sort=False returns result sorted on values for Series with string dtype
### 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 ... | diff --git a/doc/source/whatsnew/v3.0.0.rst b/doc/source/whatsnew/v3.0.0.rst
index 73201fa93a8aa..ceaf3a953f046 100644
--- a/doc/source/whatsnew/v3.0.0.rst
+++ b/doc/source/whatsnew/v3.0.0.rst
@@ -152,7 +152,7 @@ Conversion
Strings
^^^^^^^
--
+- Bug in :meth:`Series.value_counts` would not respect ``sort=False`` fo... |
pandas-dev__pandas-51057 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/arrays/categorical.py:Categorical._replace"
],
"edited_modules": [
"pandas/core/arrays/categorical.py:Categorical"
]
},
"file": "pandas/core/arrays/categori... | pandas-dev/pandas | 852518eb293897d14c7a89afe4f14dbe0e30c160 | BUG: `replace` is changing the order of ordered categories
### 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 exis... | diff --git a/pandas/core/arrays/categorical.py b/pandas/core/arrays/categorical.py
index 5b61695410474..6c497b3a7b6d8 100644
--- a/pandas/core/arrays/categorical.py
+++ b/pandas/core/arrays/categorical.py
@@ -2284,7 +2284,16 @@ def _replace(self, *, to_replace, value, inplace: bool = False):
ser = ser.replace(... |
pandas-dev__pandas-52337 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/reshape/concat.py:_Concatenator.__init__"
],
"edited_modules": [
"pandas/core/reshape/concat.py:_Concatenator"
]
},
"file": "pandas/core/reshape/concat.py"
... | pandas-dev/pandas | 1c2ad16b399ce2787212b84d08e96d470bc03d7e | API: pd.concat with len(keys) != len(values) does not raise; intentional?
```python
import pandas as pd
ser = pd.Series(range(5))
sers = [ser + n for n in range(4)]
keys = ["A", "B", "C"]
>>> pd.concat(sers, keys=keys, axis=1)
A B C
0 0 1 2
1 1 2 3
2 2 3 4
3 3 4 5
4 4 5 6
```
I expe... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index 69a955dc3cd9f..a61400e20eaa4 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -110,6 +110,7 @@ Deprecations
- Deprecated :meth:`DataFrame._data` and :meth:`Series._data`, use public APIs instead (:issu... |
pandas-dev__pandas-49284 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/indexes/base.py:Index.join",
"pandas/core/indexes/base.py:Index._wrap_joined_index"
],
"edited_modules": [
"pandas/core/indexes/base.py:Index"
]
},
... | pandas-dev/pandas | 8f869f3de0048d01fcf2f8198644fca72b926aa9 | BUG: inner join with StringDtype multi-indexes gives unexpected result in 1.5.x
### 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 conf... | diff --git a/doc/source/whatsnew/v1.5.2.rst b/doc/source/whatsnew/v1.5.2.rst
index e65be3bcecd76..572d6c74e767f 100644
--- a/doc/source/whatsnew/v1.5.2.rst
+++ b/doc/source/whatsnew/v1.5.2.rst
@@ -13,6 +13,7 @@ including other versions of pandas.
Fixed regressions
~~~~~~~~~~~~~~~~~
+- Fixed regression in :meth:`Mul... |
pandas-dev__pandas-57783 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/dtypes/dtypes.py:SparseDtype.__eq__"
],
"edited_modules": [
"pandas/core/dtypes/dtypes.py:SparseDtype"
]
},
"file": "pandas/core/dtypes/dtypes.py"
}
] | pandas-dev/pandas | 4692686a750b95884e1d5a4f1313614c71c57213 | BUG: pd.SparseDtype('int', 0) == pd.SparseDtype('int', pd.NA) returns pd.NA
### 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.
- [ ] I have confirme... | diff --git a/doc/source/whatsnew/v3.0.0.rst b/doc/source/whatsnew/v3.0.0.rst
index ca2ca07ff2fae..16be9e0a4fc34 100644
--- a/doc/source/whatsnew/v3.0.0.rst
+++ b/doc/source/whatsnew/v3.0.0.rst
@@ -280,6 +280,7 @@ Performance improvements
Bug fixes
~~~~~~~~~
+- Fixed bug in :class:`SparseDtype` for equal comparison ... |
pandas-dev__pandas-56981 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/io/formats/style.py:Styler.set_tooltips"
],
"edited_modules": [
"pandas/io/formats/style.py:Styler"
]
},
"file": "pandas/io/formats/style.py"
},
{
"chang... | pandas-dev/pandas | 44c50b20e8d08613144b3353d9cd0844a53bd077 | ENH: Add alternative html for Styler tooltips
### Feature Type
- [ ] Adding new functionality to pandas
- [X] Changing existing functionality in pandas
- [ ] Removing existing functionality in pandas
### Problem Description
Currently `pandas.io.formats.style.Styler.set_tooltips` works by adding a `<span>` tags ar... | diff --git a/doc/source/whatsnew/v3.0.0.rst b/doc/source/whatsnew/v3.0.0.rst
index 012fe47c476d1..470099c0b5cc4 100644
--- a/doc/source/whatsnew/v3.0.0.rst
+++ b/doc/source/whatsnew/v3.0.0.rst
@@ -30,6 +30,7 @@ Other enhancements
^^^^^^^^^^^^^^^^^^
- :func:`DataFrame.to_excel` now raises an ``UserWarning`` when the c... |
pandas-dev__pandas-50044 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/indexing.py:_iLocIndexer._setitem_single_column"
],
"edited_modules": [
"pandas/core/indexing.py:_iLocIndexer"
]
},
"file": "pandas/core/indexing.py"
}
] | pandas-dev/pandas | ce123cd0024029bb9138acdcc14382628a9310fc | BUG: Unclear FutureWarning regarding inplace iloc setitem
### 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.
- [ ] I have confirmed this bug exists ... | diff --git a/doc/source/whatsnew/v1.5.3.rst b/doc/source/whatsnew/v1.5.3.rst
index 489a6fda9ffab..0b670219f830c 100644
--- a/doc/source/whatsnew/v1.5.3.rst
+++ b/doc/source/whatsnew/v1.5.3.rst
@@ -48,6 +48,7 @@ Other
as pandas works toward compatibility with SQLAlchemy 2.0.
- Reverted deprecation (:issue:`45324... |
pandas-dev__pandas-53118 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/io/sql.py:_convert_arrays_to_dataframe"
],
"edited_modules": [
"pandas/io/sql.py:_convert_arrays_to_dataframe"
]
},
"file": "pandas/io/sql.py"
}
] | pandas-dev/pandas | 073156e7f755617f6f49337b041a279f6ed303a7 | REGR?: read_sql no longer supports duplicate column names
Probably caused by https://github.com/pandas-dev/pandas/pull/50048, and probably related to https://github.com/pandas-dev/pandas/issues/52437 (another change in behaviour that might have been caused by the same PR). In essence the change is from using `DataFrame... | diff --git a/doc/source/whatsnew/v2.0.2.rst b/doc/source/whatsnew/v2.0.2.rst
index 1bc2fda7b8af9..c234de3e3b3ae 100644
--- a/doc/source/whatsnew/v2.0.2.rst
+++ b/doc/source/whatsnew/v2.0.2.rst
@@ -13,6 +13,7 @@ including other versions of pandas.
Fixed regressions
~~~~~~~~~~~~~~~~~
+- Fixed regression in :func:`rea... |
pandas-dev__pandas-51756 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/generic.py:NDFrame.bool"
],
"edited_modules": [
"pandas/core/generic.py:NDFrame"
]
},
"file": "pandas/core/generic.py"
}
] | pandas-dev/pandas | 1c2ad16b399ce2787212b84d08e96d470bc03d7e | DEPR: NDFrame.bool
We recently deprecated `Series.__int__` and `Series.__float__`, let's do `NFrame.bool` too.
xref #32923
| diff --git a/doc/source/user_guide/basics.rst b/doc/source/user_guide/basics.rst
index 5c2f2410e688c..16a85ccc74b43 100644
--- a/doc/source/user_guide/basics.rst
+++ b/doc/source/user_guide/basics.rst
@@ -329,16 +329,6 @@ You can test if a pandas object is empty, via the :attr:`~DataFrame.empty` prope
df.empty
... |
pandas-dev__pandas-57250 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/indexes/api.py:union_indexes"
],
"edited_modules": [
"pandas/core/indexes/api.py:union_indexes"
]
},
"file": "pandas/core/indexes/api.py"
}
] | pandas-dev/pandas | 1bb48398b46232deb8aac3eba778e474b111307d | REGR/DOC: pd.concat(axis=1) should special case DatetimeIndex to sort even when sort=False
### Feature Type
- [ ] Adding new functionality to pandas
- [X] Changing existing functionality in pandas
- [ ] Removing existing functionality in pandas
### Problem Description
For a very long time now it used to be the de... | diff --git a/doc/source/whatsnew/v2.2.1.rst b/doc/source/whatsnew/v2.2.1.rst
index 3cc11974b14e5..14e0bc5e777d8 100644
--- a/doc/source/whatsnew/v2.2.1.rst
+++ b/doc/source/whatsnew/v2.2.1.rst
@@ -15,6 +15,7 @@ Fixed regressions
~~~~~~~~~~~~~~~~~
- Fixed memory leak in :func:`read_csv` (:issue:`57039`)
- Fixed perfo... |
pandas-dev__pandas-54306 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/groupby/grouper.py:get_grouper"
],
"edited_modules": [
"pandas/core/groupby/grouper.py:get_grouper"
]
},
"file": "pandas/core/groupby/grouper.py"
}
] | pandas-dev/pandas | aefede93b1c2b0a2e311220bfdd8c1af97a92441 | BUG: groupby() attempts to converts name of Series if name is a month and index is DateTime
### 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]... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index 0fdec3175f635..aa66a10a163ac 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -628,6 +628,7 @@ Groupby/resample/rolling
- Bug in :meth:`GroupBy.var` failing to raise ``TypeError`` when called with date... |
pandas-dev__pandas-55580 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/reshape/merge.py:_AsOfMerge._get_join_indexers"
],
"edited_modules": [
"pandas/core/reshape/merge.py:_AsOfMerge"
]
},
"file": "pandas/core/reshape/merge.py"... | pandas-dev/pandas | 00f10db680c6cf836fad80dda33849081e540230 | BUG: `merge_asof` gives incorrect results when `by` consists of multiple categorical columns with equal, but differently ordered, categories
Observing that `merge_asof` gives unexpected output when:
- `by` includes more than one column, one of which is categorical
- categorical columns included in `by` have equal cat... | diff --git a/doc/source/whatsnew/v2.2.0.rst b/doc/source/whatsnew/v2.2.0.rst
index c8c27f2f2e178..f21cbdfa0c3a4 100644
--- a/doc/source/whatsnew/v2.2.0.rst
+++ b/doc/source/whatsnew/v2.2.0.rst
@@ -277,6 +277,7 @@ Other Deprecations
Performance improvements
~~~~~~~~~~~~~~~~~~~~~~~~
- Performance improvement in :func:... |
pandas-dev__pandas-53458 | [
{
"changes": {
"added_entities": [
"pandas/core/arrays/arrow/array.py:ArrowExtensionArray._maybe_convert_datelike_array",
"pandas/core/arrays/arrow/array.py:ArrowExtensionArray._to_datetimearray",
"pandas/core/arrays/arrow/array.py:ArrowExtensionArray._to_timedeltaarray"
],
... | pandas-dev/pandas | 2f9d16f8fdbe53d37b378cea9ff27b91f2e27b2f | ENH: Support pyarrow timestamps in merge_asof
### Feature Type
- [X] Adding new functionality to pandas
- [ ] Changing existing functionality in pandas
- [ ] Removing existing functionality in pandas
### Problem Description
I would like to be able to use pyarrow timestamp dtypes as the merge column/index in merge... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index 7cc2e19f477dd..9dac2fe3c36c6 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -441,6 +441,7 @@ Groupby/resample/rolling
Reshaping
^^^^^^^^^
- Bug in :func:`crosstab` when ``dropna=False`` would not k... |
pandas-dev__pandas-47446 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": null,
"edited_modules": [
"pandas/core/strings/accessor.py:StringMethods"
]
},
"file": "pandas/core/strings/accessor.py"
}
] | pandas-dev/pandas | fc113111e01c5da5a4f8f39de0b92b268d06cfed | BUG: Unexpected keyword argument `maxsplit` on `rsplit` even though it is accepted in vanilla Python
### 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 p... | diff --git a/doc/source/whatsnew/v1.5.0.rst b/doc/source/whatsnew/v1.5.0.rst
index a5cb716317689..4c23e5e5b1906 100644
--- a/doc/source/whatsnew/v1.5.0.rst
+++ b/doc/source/whatsnew/v1.5.0.rst
@@ -705,6 +705,7 @@ Other Deprecations
- Deprecated the ``closed`` argument in :meth:`interval_range` in favor of ``inclusive`... |
pandas-dev__pandas-53288 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/indexes/range.py:RangeIndex._arith_method"
],
"edited_modules": [
"pandas/core/indexes/range.py:RangeIndex"
]
},
"file": "pandas/core/indexes/range.py"
}
... | pandas-dev/pandas | b2bb68a88cedc22321fe1408d7ef74a871a373fa | BUG: RangeIndex has zero length after subtraction from constant value
### 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.
- [ ] I have confirmed th... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index e1ac9e3309de7..2375617c19268 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -336,6 +336,7 @@ Timezones
Numeric
^^^^^^^
+- Bug in :class:`RangeIndex` setting ``step`` incorrectly when being the sub... |
pandas-dev__pandas-49080 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/indexes/multi.py:MultiIndex._values"
],
"edited_modules": [
"pandas/core/indexes/multi.py:MultiIndex"
]
},
"file": "pandas/core/indexes/multi.py"
}
] | pandas-dev/pandas | 0106c26529900bad0561efb9c9180f7f016365b0 | BUG: freq information lost after stack() is called
### 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 ... | diff --git a/doc/source/whatsnew/v1.5.1.rst b/doc/source/whatsnew/v1.5.1.rst
index 2fca23024cba7..4518c6f544e48 100644
--- a/doc/source/whatsnew/v1.5.1.rst
+++ b/doc/source/whatsnew/v1.5.1.rst
@@ -76,6 +76,7 @@ Fixed regressions
- Fixed regression in :meth:`DataFrame.loc` raising ``FutureWarning`` when setting an empt... |
pandas-dev__pandas-49169 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": null,
"edited_modules": [
"pandas/core/generic.py:NDFrame"
]
},
"file": "pandas/core/generic.py"
},
{
"changes": {
"added_entities": null,
"added_modules": null,
... | pandas-dev/pandas | 4d41ccc2431f36a72c1701dd31be7139582baf71 | BUG: DataFrame and Series constructor inconsistent in handling of Datetimelike object index
- [x] I have checked that this issue has not already been reported. (Looked through and could not find anything)
- [x] I have confirmed this bug exists on the latest version of pandas.
- [x] (optional) I have confirmed thi... | diff --git a/doc/source/whatsnew/v2.0.0.rst b/doc/source/whatsnew/v2.0.0.rst
index 8ee2baf0768ec..5e8677e2ae7a6 100644
--- a/doc/source/whatsnew/v2.0.0.rst
+++ b/doc/source/whatsnew/v2.0.0.rst
@@ -127,6 +127,8 @@ Other API changes
- Passing ``dtype`` of "timedelta64[s]", "timedelta64[ms]", or "timedelta64[us]" to :cla... |
pandas-dev__pandas-55257 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/indexes/base.py:Index.insert"
],
"edited_modules": [
"pandas/core/indexes/base.py:Index"
]
},
"file": "pandas/core/indexes/base.py"
},
{
"changes": ... | pandas-dev/pandas | 46c8da3e5b987154d2e0a44562c71be635ae826a | API: Index.insert too much dtype inference
```python
idx = pd.Index([1], dtype=object)
idx.insert(0, 1).dtype
```
ATM Index.insert uses `Index._with_infer` to construct a result, which will cast the case here to int64 instead of retaining object. I think in this case it would be more reasonable to keep object ... | diff --git a/doc/source/whatsnew/v2.2.0.rst b/doc/source/whatsnew/v2.2.0.rst
index 919ac8b03f936..c2032b0d34536 100644
--- a/doc/source/whatsnew/v2.2.0.rst
+++ b/doc/source/whatsnew/v2.2.0.rst
@@ -454,6 +454,7 @@ Other Deprecations
- Deprecated allowing non-keyword arguments in :meth:`DataFrame.to_string` except ``buf... |
pandas-dev__pandas-48776 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/io/parsers/base_parser.py:ParserBase.__init__",
"pandas/io/parsers/base_parser.py:ParserBase._agg_index",
"pandas/io/parsers/base_parser.py:ParserBase._convert_to_ndarrays",
... | pandas-dev/pandas | c0e6baf3e5cea44d105c0e9ebb3bafbc9fb5fd27 | ENH: add option to get nullable dtypes to pd.read_csv
- [x] I have checked that this issue has not already been reported.
- [x] I have confirmed this bug exists on the latest version of pandas.
- [ ] (optional) I have confirmed this bug exists on the master branch of pandas.
---
#### Code Sample, a copy-pas... | diff --git a/doc/source/user_guide/io.rst b/doc/source/user_guide/io.rst
index 15b3b894c68b6..1552f2a8d257b 100644
--- a/doc/source/user_guide/io.rst
+++ b/doc/source/user_guide/io.rst
@@ -197,6 +197,14 @@ dtype : Type name or dict of column -> type, default ``None``
Support for defaultdict was added. Specify a d... |
pandas-dev__pandas-53049 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/groupby/groupby.py:_insert_quantile_level"
],
"edited_modules": [
"pandas/core/groupby/groupby.py:_insert_quantile_level"
]
},
"file": "pandas/core/groupby/... | pandas-dev/pandas | 9bd8b5d8d05f9513886e26765e7cf2d9998eb344 | BUG: SeriesGroupby with sort=False behaves inconsistently with .quantiles(...).unstack()
### 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 ... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index 9fb039de8f73a..08ea347708b8f 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -412,6 +412,7 @@ Groupby/resample/rolling
the function operated on the whole index rather than each element of the index.... |
pandas-dev__pandas-51793 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/arrays/period.py:PeriodArray._format_native_types"
],
"edited_modules": [
"pandas/core/arrays/period.py:PeriodArray"
]
},
"file": "pandas/core/arrays/period... | pandas-dev/pandas | c71645fff865c29e77bb81bd9510dba97d93a67c | CLN: Refactor PeriodArray._format_native_types to use DatetimeArray
Once we have a DatetimeArray, we'll almost be able to share the implementation of `_format_native_types`. The main sticking point is that Period has a different default date format. It only prints the resolution necessary for the frequency.
```pyt... | diff --git a/pandas/_libs/tslibs/period.pyi b/pandas/_libs/tslibs/period.pyi
index 946ae1215f1e3..690518a9fa88f 100644
--- a/pandas/_libs/tslibs/period.pyi
+++ b/pandas/_libs/tslibs/period.pyi
@@ -42,6 +42,12 @@ def extract_ordinals(
def extract_freq(
values: npt.NDArray[np.object_],
) -> BaseOffset: ...
+def pe... |
pandas-dev__pandas-57295 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/io/formats/printing.py:_pprint_seq"
],
"edited_modules": [
"pandas/io/formats/printing.py:_pprint_seq"
]
},
"file": "pandas/io/formats/printing.py"
}
] | pandas-dev/pandas | f51bb86631154d8184c26b66967804212fe3014f | ERR: DataFrame can get into unprintable state
I know my replication case looks very strange, I had a typo assigning the wrong thing to `index=`, but the way the error is reported out of this made it very confusing to debug, possibly can do something better:
#### Code Sample, a copy-pastable example if possible
``... | diff --git a/doc/source/whatsnew/v3.0.0.rst b/doc/source/whatsnew/v3.0.0.rst
index 2c39318fa28b3..8e1c285cb123a 100644
--- a/doc/source/whatsnew/v3.0.0.rst
+++ b/doc/source/whatsnew/v3.0.0.rst
@@ -137,6 +137,7 @@ Performance improvements
Bug fixes
~~~~~~~~~
- Fixed bug in :meth:`DataFrame.join` inconsistently settin... |
pandas-dev__pandas-50081 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/groupby/generic.py:SeriesGroupBy.nunique"
],
"edited_modules": [
"pandas/core/groupby/generic.py:SeriesGroupBy"
]
},
"file": "pandas/core/groupby/generic.py... | pandas-dev/pandas | 7d2337a34828e3ed645498d0ea37ca9ceb3fa31a | SeriesGroupBy.nunique raises IndexError for empty Series with categorical variables
#### Code Sample
```python
df = pd.DataFrame({'id': ['1001', '1001', '1002', '1002', '1003', '1004', '1005', '1006'],
'cat': ['A', 'B', 'C', 'C', 'C', 'B', 'B', 'D'],
'cat2': ['a', 'a', 'b', '... | diff --git a/doc/source/whatsnew/v2.0.0.rst b/doc/source/whatsnew/v2.0.0.rst
index 0ecdde89d9013..98ce62b7f5c64 100644
--- a/doc/source/whatsnew/v2.0.0.rst
+++ b/doc/source/whatsnew/v2.0.0.rst
@@ -773,6 +773,7 @@ Groupby/resample/rolling
- Bug in :meth:`.DataFrameGroupBy.describe` would describe the group keys (:issue... |
pandas-dev__pandas-56054 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/series.py:Series.view"
],
"edited_modules": [
"pandas/core/series.py:Series"
]
},
"file": "pandas/core/series.py"
},
{
"changes": {
"added_ent... | pandas-dev/pandas | 24fdde62c6afc383baecd9a3aceada4dca804266 | DEPR: Series.view
we do not fully control memory in pandas currently; its defered to numpy, so a ``view()`` rarely makes sense, esp since we will change the dtype appropriate upon setting, breaking the view association.
```
In [35]: s = pd.Series([1, 2, 3])
In [36]: s_view = s.view()
In [39]: s_view
Out[39]:... | diff --git a/doc/source/whatsnew/v2.2.0.rst b/doc/source/whatsnew/v2.2.0.rst
index 8893fe0ecd398..d7ee47dc82d89 100644
--- a/doc/source/whatsnew/v2.2.0.rst
+++ b/doc/source/whatsnew/v2.2.0.rst
@@ -362,6 +362,7 @@ Other Deprecations
- Deprecated :func:`read_gbq` and :meth:`DataFrame.to_gbq`. Use ``pandas_gbq.read_gbq``... |
pandas-dev__pandas-55968 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/generic.py:NDFrame.resample"
],
"edited_modules": [
"pandas/core/generic.py:NDFrame"
]
},
"file": "pandas/core/generic.py"
},
{
"changes": {
"... | pandas-dev/pandas | cbe1b321d928bb00ab9809f109ab483db2bb6b2d | DEPR: Resample with PeriodIndex?
Resampling with PeriodIndex is very very broken:
```
pi = pd.period_range(start="2000", periods=3, freq="M")
ser= pd.Series(["foo", "bar", "baz"], index=pi)
rs = ser.resample("M") # should be a no-op!
>>> rs.nunique()
2000-01 foo
2000-02 bar
2000-03 baz
Freq: M, d... | diff --git a/doc/source/whatsnew/v0.21.0.rst b/doc/source/whatsnew/v0.21.0.rst
index 08a132264ddba..dad69b99ee6a4 100644
--- a/doc/source/whatsnew/v0.21.0.rst
+++ b/doc/source/whatsnew/v0.21.0.rst
@@ -635,17 +635,22 @@ Previous behavior:
New behavior:
-.. ipython:: python
+.. code-block:: ipython
- pi = pd.per... |
pandas-dev__pandas-51777 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/series.py:Series.combine_first"
],
"edited_modules": [
"pandas/core/series.py:Series"
]
},
"file": "pandas/core/series.py"
}
] | pandas-dev/pandas | f7f0df109f84ec70a61718b285b73a7527e65c91 | BUG: preserve the dtype on Series.combine_first
### 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.
- [ ] I have confirmed this bug exists on the [ma... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index 47a61d41b2440..e9c091b14810b 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -115,6 +115,7 @@ Performance improvements
- Performance improvement in :meth:`~arrays.ArrowExtensionArray.isna` when array ... |
pandas-dev__pandas-53043 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/arrays/sparse/dtype.py:SparseDtype._check_fill_value"
],
"edited_modules": [
"pandas/core/arrays/sparse/dtype.py:SparseDtype"
]
},
"file": "pandas/core/arra... | pandas-dev/pandas | 3827cafb2390824a05bc81d1bcc045c67e27606d | Require the dtype of SparseArray.fill_value and sp_values.dtype to match
This has confused me for a while, but we apparently (sometimes?) allow a `fill_value` whose dtype is not the same as `sp_values.dtype`
```python
In [20]: a = pd.SparseArray([1, 2, 3], fill_value=1.0)
In [21]: a
Out[21]:
[1.0, 2, 3]
Fill:... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index 5b62883c2741e..63e212e40e9a3 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -261,6 +261,7 @@ Deprecations
- Deprecated unused "closed" keyword in the :class:`TimedeltaIndex` constructor (:issue:`5262... |
pandas-dev__pandas-55448 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/frame.py:DataFrame.stack"
],
"edited_modules": [
"pandas/core/frame.py:DataFrame"
]
},
"file": "pandas/core/frame.py"
}
] | pandas-dev/pandas | b5b8be04b2a63fc02e89650a740779e718d7a99b | DEPR/BUG: DataFrame.stack including all null rows when stacking multiple levels
Ref: https://github.com/pandas-dev/pandas/pull/53094#issuecomment-1567937468
From the link above, `DataFrame.stack` with `dropna=False` will include column combinations that did not exist in the original DataFrame; the values are necessa... | diff --git a/doc/source/whatsnew/v2.2.0.rst b/doc/source/whatsnew/v2.2.0.rst
index 93ca2541d7ecd..69669b0d4cc54 100644
--- a/doc/source/whatsnew/v2.2.0.rst
+++ b/doc/source/whatsnew/v2.2.0.rst
@@ -261,6 +261,7 @@ Other Deprecations
- Deprecated the ``fastpath`` keyword in the :class:`Series` constructor (:issue:`20110... |
pandas-dev__pandas-48169 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/frame.py:DataFrame.select_dtypes"
],
"edited_modules": [
"pandas/core/frame.py:DataFrame"
]
},
"file": "pandas/core/frame.py"
}
] | pandas-dev/pandas | cf88cc14787bd4d1c769e269ec5f0469b2eea820 | BUG: DataFrame.select_dtypes(include='number') includes BooleanDtype columns
### 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.
- [ ] I have confirm... | diff --git a/doc/source/whatsnew/v1.4.4.rst b/doc/source/whatsnew/v1.4.4.rst
index 3414082581b80..2f290217bf985 100644
--- a/doc/source/whatsnew/v1.4.4.rst
+++ b/doc/source/whatsnew/v1.4.4.rst
@@ -17,6 +17,7 @@ Fixed regressions
- Fixed regression in taking NULL :class:`objects` from a :class:`DataFrame` causing a seg... |
pandas-dev__pandas-56419 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/arrays/datetimes.py:DatetimeArray._unbox_scalar"
],
"edited_modules": [
"pandas/core/arrays/datetimes.py:DatetimeArray"
]
},
"file": "pandas/core/arrays/dat... | pandas-dev/pandas | bfe5be01fef4eaecf4ab033e74139b0a3cac4a39 | BUG/API: setitem/where with mixed dt64 units
```python
import pandas as pd
dti = pd.date_range("2016-01-01", periods=3, unit="s")
item = pd.Timestamp("2016-02-03 04:05:06.789")
ser = pd.Series(dti)
ser[0] = item
>>> assert ser[0] == item # <- raises bc item is rounded
mask = [False, True, True]
res = s... | diff --git a/doc/source/whatsnew/v3.0.0.rst b/doc/source/whatsnew/v3.0.0.rst
index 7823f74b7a153..4213cc8e6cfcf 100644
--- a/doc/source/whatsnew/v3.0.0.rst
+++ b/doc/source/whatsnew/v3.0.0.rst
@@ -360,6 +360,7 @@ Datetimelike
- Bug in :func:`date_range` where the last valid timestamp would sometimes not be produced (:... |
pandas-dev__pandas-56250 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/io/parsers/python_parser.py:PythonParser._get_lines"
],
"edited_modules": [
"pandas/io/parsers/python_parser.py:PythonParser"
]
},
"file": "pandas/io/parsers/pyt... | pandas-dev/pandas | d44f6c11909616209ae14dd5805c378f6abbef19 | BUG: Python Engine does not respect chunksize when skiprows is specified as a nonempty list.
### 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... | diff --git a/doc/source/whatsnew/v2.2.0.rst b/doc/source/whatsnew/v2.2.0.rst
index 5ee2bb1778cb1..c20e667774b3c 100644
--- a/doc/source/whatsnew/v2.2.0.rst
+++ b/doc/source/whatsnew/v2.2.0.rst
@@ -566,6 +566,8 @@ MultiIndex
I/O
^^^
+- Bug in :func:`read_csv` where ``engine="python"`` did not respect ``chunksize`` a... |
pandas-dev__pandas-52528 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/tseries/frequencies.py:infer_freq"
],
"edited_modules": [
"pandas/tseries/frequencies.py:infer_freq"
]
},
"file": "pandas/tseries/frequencies.py"
}
] | pandas-dev/pandas | efccff865544ea434f67b77af2486406af4d1003 | BUG: `infer_freq` throws exception on `Series` of timezone-aware `Timestamp`s
### 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 ... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index fd19c84f8ab23..a70ff2ae9b252 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -229,7 +229,7 @@ Timedelta
Timezones
^^^^^^^^^
--
+- Bug in :func:`infer_freq` that raises ``TypeError`` for ``Series`` ... |
pandas-dev__pandas-47840 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/groupby/groupby.py:GroupBy._make_wrapper"
],
"edited_modules": [
"pandas/core/groupby/groupby.py:GroupBy"
]
},
"file": "pandas/core/groupby/groupby.py"
}
... | pandas-dev/pandas | 6e1a0401420bffd282f3cf8b57e653a39e373d3b | BUG: Groupby on a partial index with fillna drops the grouped by key when the dataframe is empty
### 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.
... | diff --git a/doc/source/whatsnew/v1.5.0.rst b/doc/source/whatsnew/v1.5.0.rst
index d138ebb9c02a3..7fc8b16bbed9a 100644
--- a/doc/source/whatsnew/v1.5.0.rst
+++ b/doc/source/whatsnew/v1.5.0.rst
@@ -1010,6 +1010,7 @@ Groupby/resample/rolling
- Bug in :meth:`DataFrame.resample` reduction methods when used with ``on`` wou... |
pandas-dev__pandas-54129 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/groupby/groupby.py:GroupBy.count"
],
"edited_modules": [
"pandas/core/groupby/groupby.py:GroupBy"
]
},
"file": "pandas/core/groupby/groupby.py"
}
] | pandas-dev/pandas | e0964c2da4486896302e933044c6059d523c681f | BUG: DataFrame.groupby.count with arrow dtypes do not return arrow dtypes
### 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.
- [ ] I have conf... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index 839870cb18a0b..107dd87fd7486 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -569,6 +569,7 @@ Groupby/resample/rolling
- Bug in :meth:`GroupBy.var` failing to raise ``TypeError`` when called with date... |
pandas-dev__pandas-56767 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/arrays/masked.py:BaseMaskedArray.round"
],
"edited_modules": [
"pandas/core/arrays/masked.py:BaseMaskedArray"
]
},
"file": "pandas/core/arrays/masked.py"
... | pandas-dev/pandas | d8e952949b7d325862d11289dad69da3e15b1435 | BUG: Rounding on `BooleanDtype` raises an exception
### 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 ... | diff --git a/doc/source/whatsnew/v2.2.0.rst b/doc/source/whatsnew/v2.2.0.rst
index b138e91b41661..93b63f99ea399 100644
--- a/doc/source/whatsnew/v2.2.0.rst
+++ b/doc/source/whatsnew/v2.2.0.rst
@@ -790,6 +790,7 @@ Numeric
- Bug in :meth:`Series.__floordiv__` for :class:`ArrowDtype` with integral dtypes raising for larg... |
pandas-dev__pandas-57965 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/io/parsers/base_parser.py:ParserBase._agg_index"
],
"edited_modules": [
"pandas/io/parsers/base_parser.py:ParserBase"
]
},
"file": "pandas/io/parsers/base_parser... | pandas-dev/pandas | 8dc8f64525550c85c4132b41d3ed3a37455bfbc8 | BUG: na_values dict form not working on index column
### 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.
- [ ] I have confirmed this bug exist... | diff --git a/doc/source/whatsnew/v3.0.0.rst b/doc/source/whatsnew/v3.0.0.rst
index ef561d50066d1..bce5c7927c72d 100644
--- a/doc/source/whatsnew/v3.0.0.rst
+++ b/doc/source/whatsnew/v3.0.0.rst
@@ -301,6 +301,7 @@ Bug fixes
- Fixed bug in :meth:`Series.diff` allowing non-integer values for the ``periods`` argument. (:i... |
pandas-dev__pandas-57679 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/algorithms.py:unique_with_mask"
],
"edited_modules": [
"pandas/core/algorithms.py:unique_with_mask"
]
},
"file": "pandas/core/algorithms.py"
}
] | pandas-dev/pandas | fd1126cf0340e15896d367df17df3c5d7a66af7d | BUG: pd.unique(index) does not always return an index
### 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.
- [ ] I have confirmed this bug exists on t... | diff --git a/doc/source/whatsnew/v3.0.0.rst b/doc/source/whatsnew/v3.0.0.rst
index 9812521fe2767..cc8f26bf95a2f 100644
--- a/doc/source/whatsnew/v3.0.0.rst
+++ b/doc/source/whatsnew/v3.0.0.rst
@@ -390,6 +390,7 @@ Other
^^^^^
- Bug in :class:`DataFrame` when passing a ``dict`` with a NA scalar and ``columns`` that wou... |
pandas-dev__pandas-57697 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/io/formats/excel.py:ExcelFormatter._format_header_mi"
],
"edited_modules": [
"pandas/io/formats/excel.py:ExcelFormatter"
]
},
"file": "pandas/io/formats/excel.py... | pandas-dev/pandas | ab2980ba52ae24db72765b3c4ae1d33ac8fad3f5 | BUG: Error when exporting empty DataFrame with MultiIndex on both axes to xlsx file
### 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 ... | diff --git a/doc/source/whatsnew/v3.0.0.rst b/doc/source/whatsnew/v3.0.0.rst
index a95f0485abd5f..6b412f5427811 100644
--- a/doc/source/whatsnew/v3.0.0.rst
+++ b/doc/source/whatsnew/v3.0.0.rst
@@ -324,6 +324,7 @@ MultiIndex
I/O
^^^
+- Bug in :meth:`DataFrame.to_excel` when writing empty :class:`DataFrame` with :cla... |
pandas-dev__pandas-50150 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/reshape/merge.py:_AsOfMerge._validate_left_right_on"
],
"edited_modules": [
"pandas/core/reshape/merge.py:_AsOfMerge"
]
},
"file": "pandas/core/reshape/merg... | pandas-dev/pandas | e38daf0b6fe170772cf6518fec666e2872eb32eb | BUG: merge_asof with non-unique on, left_on, or right_on, raises AttributeError: 'DataFrame' object has no attribute 'dtype'
### 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/whats... | diff --git a/doc/source/whatsnew/v2.0.0.rst b/doc/source/whatsnew/v2.0.0.rst
index d6e0bb2ae0830..316b4dd817b5a 100644
--- a/doc/source/whatsnew/v2.0.0.rst
+++ b/doc/source/whatsnew/v2.0.0.rst
@@ -83,6 +83,7 @@ Other enhancements
- :func:`timedelta_range` now supports a ``unit`` keyword ("s", "ms", "us", or "ns") to s... |
pandas-dev__pandas-56421 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/indexes/base.py:Index.view"
],
"edited_modules": [
"pandas/core/indexes/base.py:Index"
]
},
"file": "pandas/core/indexes/base.py"
}
] | pandas-dev/pandas | 04307e717d3d227cbdf250695f2698c2cae7752d | API/DEPR: Index.view _typ check, return type
Index.view has a `cls` argument (instead of dtype, which I would expect) and starts with:
```
# we need to see if we are subclassing an
# index type here
if cls is not None and not hasattr(cls, "_typ"):
```
The "_typ" check must have been in... | diff --git a/doc/source/whatsnew/v2.2.0.rst b/doc/source/whatsnew/v2.2.0.rst
index 8a1906d20c243..410dfa3fd5b4a 100644
--- a/doc/source/whatsnew/v2.2.0.rst
+++ b/doc/source/whatsnew/v2.2.0.rst
@@ -438,6 +438,7 @@ Other Deprecations
- Deprecated :meth:`Series.view`, use :meth:`Series.astype` instead to change the dtype... |
pandas-dev__pandas-49643 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/groupby/groupby.py:GroupBy._set_group_selection",
"pandas/core/groupby/groupby.py:GroupBy.describe"
],
"edited_modules": [
"pandas/core/groupby/groupby.py:GroupBy... | pandas-dev/pandas | a37b78d534cd25e21d2ab64318ceae808df46c89 | BUG: groupby.describe with as_index=False incorrect
```
df = DataFrame(
[[1, 2, "foo"], [1, np.nan, "bar"], [3, np.nan, "baz"]],
columns=["A", "B", "C"],
)
gb = df.groupby("A", as_index=False)
print(gb.describe())
# A ... B
# count... | diff --git a/doc/source/whatsnew/v2.0.0.rst b/doc/source/whatsnew/v2.0.0.rst
index efb4a572486e3..28c4b89b925dd 100644
--- a/doc/source/whatsnew/v2.0.0.rst
+++ b/doc/source/whatsnew/v2.0.0.rst
@@ -716,7 +716,9 @@ Groupby/resample/rolling
- Bug in :class:`.DataFrameGroupBy` and :class:`.SeriesGroupBy` would not include... |
pandas-dev__pandas-55927 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/reshape/merge.py:_OrderedMerge.get_result"
],
"edited_modules": [
"pandas/core/reshape/merge.py:_OrderedMerge"
]
},
"file": "pandas/core/reshape/merge.py"
... | pandas-dev/pandas | 76d28c7a199bcdb9824b0e3084d846dd65307c44 | `merge_ordered()` doesn't validate `fill_method`
[The docs](https://pandas.pydata.org/docs/dev/reference/api/pandas.merge_ordered.html) say `fill_method` is the "Interpolation method for data", but I just tried `pd.merge_ordered(..., fill_method='linear')` and it didn't interpolate.
Looking closer at the docs, `fill... | diff --git a/pandas/core/reshape/merge.py b/pandas/core/reshape/merge.py
index f83a12b268b22..f8575b1b53908 100644
--- a/pandas/core/reshape/merge.py
+++ b/pandas/core/reshape/merge.py
@@ -1863,9 +1863,11 @@ def get_result(self, copy: bool | None = True) -> DataFrame:
right_indexer = cast("npt.NDArray[np.i... |
pandas-dev__pandas-58549 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/arrays/datetimes.py:_field_accessor"
],
"edited_modules": [
"pandas/core/arrays/datetimes.py:_field_accessor"
]
},
"file": "pandas/core/arrays/datetimes.py"... | pandas-dev/pandas | 1556dc050511f7caaf3091a94660721840bb8c9a | BUG: DatetimeIndex.is_year_start breaks on double-digit frequencies
### 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 b... | diff --git a/doc/source/whatsnew/v3.0.0.rst b/doc/source/whatsnew/v3.0.0.rst
index 53b6179dbae93..a62afbd32dfec 100644
--- a/doc/source/whatsnew/v3.0.0.rst
+++ b/doc/source/whatsnew/v3.0.0.rst
@@ -419,6 +419,7 @@ Interval
Indexing
^^^^^^^^
- Bug in :meth:`DataFrame.__getitem__` returning modified columns when called... |
pandas-dev__pandas-50947 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/nanops.py:nanany",
"pandas/core/nanops.py:nanall"
],
"edited_modules": [
"pandas/core/nanops.py:nanany",
"pandas/core/nanops.py:nanall"
]
},
... | pandas-dev/pandas | 16801a1f4b836e2fbf49d623fe565457a3e375b3 | API: any/all logical operation for datetime-like dtypes
In my attempt to enable DataFrame reductions for ExtensionArrays (and at the same time cleaning up `DataFrame._reduce` a bit) at https://github.com/pandas-dev/pandas/pull/32867, I am running into the following inconsistency.
Consider a Timedelta array, and how ... | diff --git a/doc/source/whatsnew/v2.0.0.rst b/doc/source/whatsnew/v2.0.0.rst
index 613a1e82d461f..cd384857153c0 100644
--- a/doc/source/whatsnew/v2.0.0.rst
+++ b/doc/source/whatsnew/v2.0.0.rst
@@ -638,6 +638,7 @@ Deprecations
- :meth:`Index.holds_integer` has been deprecated. Use :func:`pandas.api.types.infer_dtype` i... |
pandas-dev__pandas-50930 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/indexes/base.py:Index._transform_index"
],
"edited_modules": [
"pandas/core/indexes/base.py:Index"
]
},
"file": "pandas/core/indexes/base.py"
}
] | pandas-dev/pandas | 77afbccc0fe3ce6504898bb88fa418a3aec07a27 | BUG: Rename MultiIndex level destroys CategoricalIndex on other levels
When renaming some values in one of the levels of an index, any CategoricalIndex on other unrelated levels are suddenly no longer categorical.
#### Code Sample, a copy-pastable example if possible
```python
import pandas as pd
mi = pd.MultiI... | diff --git a/doc/source/whatsnew/v2.0.0.rst b/doc/source/whatsnew/v2.0.0.rst
index 0ceda331de790..9f68a9ebb43b8 100644
--- a/doc/source/whatsnew/v2.0.0.rst
+++ b/doc/source/whatsnew/v2.0.0.rst
@@ -898,6 +898,7 @@ Performance improvements
- Performance improvements to :func:`read_sas` (:issue:`47403`, :issue:`47405`, :... |
pandas-dev__pandas-49967 | [
{
"changes": {
"added_entities": [
"pandas/io/sql.py:_cleanup_after_generator",
"pandas/io/sql.py:PandasSQL.__enter__",
"pandas/io/sql.py:PandasSQL.__exit__",
"pandas/io/sql.py:SQLDatabase.__exit__"
],
"added_modules": [
"pandas/io/sql.py:_cleanup_after_... | pandas-dev/pandas | 026a83e06447b749385beddd3d03abe97d48e8f5 | BUG: read_sql with chunksize fails due to connection already closed
I'm creating this issue to document a bug which exists on the main branch. The bug was created by #49531, and I have an open PR to fix it: #49967. The bug does not exist in the latest release, so I did not use the issue template.
Example:
```
fro... | diff --git a/pandas/io/sql.py b/pandas/io/sql.py
index 2c98ff61cbef6..62a54a548a990 100644
--- a/pandas/io/sql.py
+++ b/pandas/io/sql.py
@@ -9,7 +9,10 @@
ABC,
abstractmethod,
)
-from contextlib import contextmanager
+from contextlib import (
+ ExitStack,
+ contextmanager,
+)
from datetime import (
... |
pandas-dev__pandas-54166 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/arrays/categorical.py:Categorical._reduce"
],
"edited_modules": [
"pandas/core/arrays/categorical.py:Categorical"
]
},
"file": "pandas/core/arrays/categoric... | pandas-dev/pandas | ee18e0605c615ff62af9c40eb71f88313939acef | BUG: idxmax returns incorrect dtype when index is timestamp and skipna is False
###
- [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 ... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index 137f2e5c12211..e3652aa102d92 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -502,6 +502,7 @@ Missing
^^^^^^^
- Bug in :meth:`DataFrame.interpolate` failing to fill across multiblock data when ``meth... |
pandas-dev__pandas-57570 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/interchange/column.py:PandasColumn._get_data_buffer"
],
"edited_modules": [
"pandas/core/interchange/column.py:PandasColumn"
]
},
"file": "pandas/core/inter... | pandas-dev/pandas | 4ed67ac9ef3d9fde6fb8441bc9ea33c0d786649e | BUG: Interchange object data buffer has the wrong dtype / `from_dataframe` incorrect
### 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] ... | diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 375c74f29e63a..3253f9ab87363 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -53,13 +53,11 @@ repos:
- repo: https://github.com/pre-commit/pre-commit-hooks
rev: v4.5.0
hooks:
- - id: check-ast
- id: check... |
pandas-dev__pandas-53638 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/generic.py:NDFrame.interpolate"
],
"edited_modules": [
"pandas/core/generic.py:NDFrame"
]
},
"file": "pandas/core/generic.py"
}
] | pandas-dev/pandas | 4149f323882a55a2fe57415ccc190ea2aaba869b | API/DEPR: interpolate with object dtype
```python
import pandas as pd
import numpy as np
ser = pd.Series([1, np.nan, 2], dtype=object)
>>> ser.interpolate()
0 1
1 NaN
2 2
dtype: object
```
ATM if we have object-dtype, interpolate is incorrectly a no-op. (In the DataFrame case we have a wei... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index ba5334b2f4fa8..2f112990cab55 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -279,6 +279,7 @@ Deprecations
- Deprecated logical operation between two non boolean :class:`Series` with different indexes... |
pandas-dev__pandas-50764 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/computation/common.py:result_type_many"
],
"edited_modules": [
"pandas/core/computation/common.py:result_type_many"
]
},
"file": "pandas/core/computation/co... | pandas-dev/pandas | fae47ff19afd4326549fe8c973f18b6c05f92efa | DataFrame.query raises ValueError when comparing columns with nullable dtypes
#### Code Sample
```python
In [2]: df1 = pd.DataFrame({'A': [1, 1, 2], 'B': [1, 2, 2]})
In [3]: df1.dtypes
Out[3]:
A int64
B int64
dtype: object
In [4]: df2 = pd.DataFrame({'A': [1, 1, 2], 'B': [1, 2, 2]}, dtype='Int64')
... | diff --git a/doc/source/whatsnew/v2.0.0.rst b/doc/source/whatsnew/v2.0.0.rst
index 532881fee0892..d8beff81e6c6b 100644
--- a/doc/source/whatsnew/v2.0.0.rst
+++ b/doc/source/whatsnew/v2.0.0.rst
@@ -1183,6 +1183,7 @@ Conversion
- Bug in :meth:`DataFrame.astype` not copying data when converting to pyarrow dtype (:issue:`... |
pandas-dev__pandas-50713 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/io/formats/style.py:_background_gradient"
],
"edited_modules": [
"pandas/io/formats/style.py:_background_gradient"
]
},
"file": "pandas/io/formats/style.py"
}
... | pandas-dev/pandas | a0071f9c9674b8ae24bbcaad95a9ba70dcdcd423 | BUG: style.background_gradient() fails on nullable series (ex: Int64) with null values
### 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 ha... | diff --git a/doc/source/whatsnew/v2.0.0.rst b/doc/source/whatsnew/v2.0.0.rst
index 033f47f0c994d..d073c2b126227 100644
--- a/doc/source/whatsnew/v2.0.0.rst
+++ b/doc/source/whatsnew/v2.0.0.rst
@@ -1079,7 +1079,7 @@ ExtensionArray
Styler
^^^^^^
--
+- Fix :meth:`~pandas.io.formats.style.Styler.background_gradient` fo... |
pandas-dev__pandas-57957 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/groupby/ops.py:WrappedCythonOp._call_cython_op"
],
"edited_modules": [
"pandas/core/groupby/ops.py:WrappedCythonOp"
]
},
"file": "pandas/core/groupby/ops.py... | pandas-dev/pandas | c900dc8c09e178b7662cb643d2fd0d651e57c016 | BUG: Groupby median on timedelta column with NaT returns odd value
### 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 t... | diff --git a/doc/source/whatsnew/v3.0.0.rst b/doc/source/whatsnew/v3.0.0.rst
index f748f6e23e003..3964745e2e657 100644
--- a/doc/source/whatsnew/v3.0.0.rst
+++ b/doc/source/whatsnew/v3.0.0.rst
@@ -297,6 +297,7 @@ Performance improvements
Bug fixes
~~~~~~~~~
- Fixed bug in :class:`SparseDtype` for equal comparison wi... |
pandas-dev__pandas-50719 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/nanops.py:_wrap_results"
],
"edited_modules": [
"pandas/core/nanops.py:_wrap_results"
]
},
"file": "pandas/core/nanops.py"
}
] | pandas-dev/pandas | b00148b6c3a73a9d83cdf60a2e18befeaadf68bd | BUG: .max() gives wrong answer for non-nanosecond datetimeindex
### 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 e... | diff --git a/pandas/core/nanops.py b/pandas/core/nanops.py
index b8e2b1fafe326..f9c6465cd948e 100644
--- a/pandas/core/nanops.py
+++ b/pandas/core/nanops.py
@@ -370,9 +370,9 @@ def _wrap_results(result, dtype: np.dtype, fill_value=None):
result = np.nan
if isna(result):
- ... |
pandas-dev__pandas-48662 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/indexes/base.py:Index._should_fallback_to_positional"
],
"edited_modules": [
"pandas/core/indexes/base.py:Index"
]
},
"file": "pandas/core/indexes/base.py"
... | pandas-dev/pandas | 6745e4463180e5808d87a48717728509efaff3bf | QST: pd.series indexing True auto 0 change
### Research
- [X] I have searched the [[pandas] tag](https://stackoverflow.com/questions/tagged/pandas) on StackOverflow for similar questions.
- [X] I have asked my usage related question on [StackOverflow](https://stackoverflow.com).
### Link to question on StackOverflo... | diff --git a/doc/source/whatsnew/v1.5.1.rst b/doc/source/whatsnew/v1.5.1.rst
index da0bd746e3da5..6936baee5a9f8 100644
--- a/doc/source/whatsnew/v1.5.1.rst
+++ b/doc/source/whatsnew/v1.5.1.rst
@@ -82,6 +82,7 @@ Fixed regressions
Bug fixes
~~~~~~~~~
+- Bug in :meth:`Series.__getitem__` not falling back to positional... |
pandas-dev__pandas-56365 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/reshape/concat.py:_Concatenator.__init__",
"pandas/core/reshape/concat.py:_Concatenator._sanitize_mixed_ndim"
],
"edited_modules": [
"pandas/core/reshape/concat.p... | pandas-dev/pandas | fce776059054f4a559a1b0b740e4ee171cfdb9f9 | Treat Series as 1-column dataframe in concat with dataframe
When concatenating a dataframe and series along axis 1, [the docs](http://pandas.pydata.org/pandas-docs/stable/merging.html#concatenating-with-mixed-ndims) indicate that the series will be treated as a series with a single column matching the column name. Base... | diff --git a/doc/source/whatsnew/v2.2.0.rst b/doc/source/whatsnew/v2.2.0.rst
index dea986c401b60..52a354b8e54bd 100644
--- a/doc/source/whatsnew/v2.2.0.rst
+++ b/doc/source/whatsnew/v2.2.0.rst
@@ -636,6 +636,7 @@ Groupby/resample/rolling
Reshaping
^^^^^^^^^
- Bug in :func:`concat` ignoring ``sort`` parameter when pa... |
pandas-dev__pandas-54451 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/io/formats/format.py:_trim_zeros_complex"
],
"edited_modules": [
"pandas/io/formats/format.py:_trim_zeros_complex"
]
},
"file": "pandas/io/formats/format.py"
}... | pandas-dev/pandas | a68b97d438c89ec1052a6f313a9131895663adc3 | DOC: Convert docstring to numpydoc.
- [N/A] closes #xxxx (Replace xxxx with the GitHub issue number) https://github.com/jorisvandenbossche/euroscipy-2023-pandas-sprint/issues/7
- [N/A] [Tests added and passed](https://pandas.pydata.org/pandas-docs/dev/development/contributing_codebase.html#writing-tests) if fixing a b... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index a0c5b4523f782..fb016defc0c56 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -731,6 +731,7 @@ I/O
- Bug in :func:`read_sql` when reading multiple timezone aware columns with the same column name (:iss... |
pandas-dev__pandas-55690 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/io/sql.py:SQLiteTable._register_date_adapters"
],
"edited_modules": [
"pandas/io/sql.py:SQLiteTable"
]
},
"file": "pandas/io/sql.py"
}
] | pandas-dev/pandas | 074ab2f87d2aeb9586c90b7266f7f1f4488f1db0 | BUG: after pandas 2.1.0 sqlite isnt able to auto parse dates based on schema
### 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 c... | diff --git a/doc/source/whatsnew/v2.1.2.rst b/doc/source/whatsnew/v2.1.2.rst
index 145c364728b40..b4e903734c2d8 100644
--- a/doc/source/whatsnew/v2.1.2.rst
+++ b/doc/source/whatsnew/v2.1.2.rst
@@ -18,6 +18,7 @@ Fixed regressions
- Fixed regression in :meth:`DataFrame.sort_index` which was not sorting correctly when th... |
pandas-dev__pandas-52567 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": null,
"edited_modules": null
},
"file": "pandas/tseries/frequencies.py"
}
] | pandas-dev/pandas | 0cb4d1ba852ca7f8430b1ae52ce2c6b5ed140747 | BUG?: Period allows construction from Custom freqs
```python
freq = pd.offsets.CustomBusinessDay(weekmask="Mon Wed Fri")
per = pd.Period("2023-04-06", freq=freq)
>>> freq.is_on_offset(per.to_timestamp())
False
>>> per
Period('2023-04-06', 'C')
```
The link between DateOffset and Period is a footgun. ... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index 85ac166509b7f..f2baa33b7cfc4 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -337,6 +337,8 @@ Period
- Bug in :meth:`arrays.PeriodArray.map` and :meth:`PeriodIndex.map`, where the supplied callable op... |
pandas-dev__pandas-50414 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/groupby/groupby.py:GroupBy._set_group_selection"
],
"edited_modules": [
"pandas/core/groupby/groupby.py:GroupBy"
]
},
"file": "pandas/core/groupby/groupby.p... | pandas-dev/pandas | b6eecb392c803914a4f25bf08fe2824726945af4 | BUG: Grouper specified by key not regarded as in-axis
Currently using `as_index=False` only includes in-axis groupers (see #49519). Defining a Grouper by the `key` argument is in-axis, but not regarded as such.
```
df = pd.DataFrame({'a': [1, 1, 2], 'b': [1, 1, 2], 'c': [3, 4, 5]})
gb = df.groupby([pd.Grouper(key=... | diff --git a/doc/source/whatsnew/v2.0.0.rst b/doc/source/whatsnew/v2.0.0.rst
index 9957ccb4fde50..72b2d9aeca614 100644
--- a/doc/source/whatsnew/v2.0.0.rst
+++ b/doc/source/whatsnew/v2.0.0.rst
@@ -932,6 +932,8 @@ Groupby/resample/rolling
- Bug in :class:`.DataFrameGroupBy` and :class:`.SeriesGroupBy` with ``dropna=Fal... |
pandas-dev__pandas-55929 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/arrays/sparse/array.py:SparseArray._take_with_fill"
],
"edited_modules": [
"pandas/core/arrays/sparse/array.py:SparseArray"
]
},
"file": "pandas/core/arrays... | pandas-dev/pandas | b2d9ec17c52084ee2b629633c9119c01ea11d387 | BUG: DataFrame.mode() fails on sparse integer DataFrames
### 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 o... | diff --git a/doc/source/whatsnew/v2.2.0.rst b/doc/source/whatsnew/v2.2.0.rst
index efa4a52993a90..8210bcf1feefe 100644
--- a/doc/source/whatsnew/v2.2.0.rst
+++ b/doc/source/whatsnew/v2.2.0.rst
@@ -445,7 +445,7 @@ Reshaping
Sparse
^^^^^^
--
+- Bug in :meth:`SparseArray.take` when using a different fill value than th... |
pandas-dev__pandas-51741 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/arrays/arrow/array.py:ArrowExtensionArray._concat_same_type"
],
"edited_modules": [
"pandas/core/arrays/arrow/array.py:ArrowExtensionArray"
]
},
"file": "pa... | pandas-dev/pandas | 376f77da131bb45147ea67009b65ffbad59e4945 | BUG: `pd.concat` fails with `GroupBy.head()` and `pd.StringDtype["pyarrow"]`
### 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 confirm... | diff --git a/doc/source/whatsnew/v2.0.0.rst b/doc/source/whatsnew/v2.0.0.rst
index 15e3d66ecc551..374a1e43daa11 100644
--- a/doc/source/whatsnew/v2.0.0.rst
+++ b/doc/source/whatsnew/v2.0.0.rst
@@ -1249,6 +1249,7 @@ Indexing
- Bug in :meth:`DataFrame.compare` does not recognize differences when comparing ``NA`` with va... |
pandas-dev__pandas-56802 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/io/json/_normalize.py:json_normalize"
],
"edited_modules": [
"pandas/io/json/_normalize.py:json_normalize"
]
},
"file": "pandas/io/json/_normalize.py"
}
] | pandas-dev/pandas | fce520d45a304ee2659bb4156acf484cee5aea07 | Whole JSON gets dumped from error in _pull_records()
This error message shows the entire JSON, then the erroring part, both of which can be very large.
https://github.com/pandas-dev/pandas/blob/68c1af5358561b4655861f99ac1dfb27ac5d4d56/pandas/io/json/_normalize.py#L429-L432
Example:
```python
url = 'https://ww... | diff --git a/pandas/io/json/_normalize.py b/pandas/io/json/_normalize.py
index b1e2210f9d894..7e3e83d59c87c 100644
--- a/pandas/io/json/_normalize.py
+++ b/pandas/io/json/_normalize.py
@@ -427,8 +427,8 @@ def _pull_records(js: dict[str, Any], spec: list | str) -> list:
result = []
else:
... |
pandas-dev__pandas-56522 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/algorithms.py:safe_sort"
],
"edited_modules": [
"pandas/core/algorithms.py:safe_sort"
]
},
"file": "pandas/core/algorithms.py"
}
] | pandas-dev/pandas | d77d5e54f9fb317f61caa1985df8ca156df921e1 | BUG: Regression for grouping on Decimal values when upgrading from 1.3 to 2.0.3
### 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.
- [ ] I have conf... | diff --git a/doc/source/whatsnew/v2.2.0.rst b/doc/source/whatsnew/v2.2.0.rst
index 8209525721b98..c5769ca6c6f24 100644
--- a/doc/source/whatsnew/v2.2.0.rst
+++ b/doc/source/whatsnew/v2.2.0.rst
@@ -654,11 +654,11 @@ Groupby/resample/rolling
- Bug in :meth:`.DataFrameGroupBy.value_counts` and :meth:`.SeriesGroupBy.value... |
pandas-dev__pandas-58437 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/computation/align.py:align_terms",
"pandas/core/computation/align.py:reconstruct_object"
],
"edited_modules": [
"pandas/core/computation/align.py:align_terms",
... | pandas-dev/pandas | 4de300da14bd03da3bd759bebdfcc65570d68094 | BUG: numexpr eval doesn't hold column name via single column selection
``` python
df = pd.DataFrame(np.random.randn(2, 3), columns=['A', 'B', 'C'])
numexpr.__version__
# '2.4'
# all resets column name
pd.eval('df.A')
#0 -0.312782
#1 1.204993
# dtype: float64
pd.eval('df["A"]')
#0 -0.312782
#1 1.204993
# dt... | diff --git a/doc/source/whatsnew/v3.0.0.rst b/doc/source/whatsnew/v3.0.0.rst
index c77348b365370..e8d131f8bbb8e 100644
--- a/doc/source/whatsnew/v3.0.0.rst
+++ b/doc/source/whatsnew/v3.0.0.rst
@@ -465,6 +465,7 @@ Styler
Other
^^^^^
- Bug in :class:`DataFrame` when passing a ``dict`` with a NA scalar and ``columns`` ... |
pandas-dev__pandas-51631 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/arrays/arrow/array.py:ArrowExtensionArray._reduce"
],
"edited_modules": [
"pandas/core/arrays/arrow/array.py:ArrowExtensionArray"
]
},
"file": "pandas/core/... | pandas-dev/pandas | b99e2961e1aa89f80dbc9561d8ed47afbe4bc822 | BUG?: Series.any / Series.all behavior for pyarrow vs. non-pyarrow empty/all-NA
### 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 conf... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index cb72b68fd319b..fd7593737387f 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -199,7 +199,7 @@ Sparse
ExtensionArray
^^^^^^^^^^^^^^
--
+- Bug in :meth:`Series.any` and :meth:`Series.all` returning `... |
pandas-dev__pandas-48058 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/indexes/base.py:Index.insert"
],
"edited_modules": [
"pandas/core/indexes/base.py:Index"
]
},
"file": "pandas/core/indexes/base.py"
}
] | pandas-dev/pandas | 70f981fbf2aecdbae85deddbec3ee473994f30b9 | BUG: Reset index regression
### 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 branch of pandas.
... | diff --git a/doc/source/whatsnew/v1.4.4.rst b/doc/source/whatsnew/v1.4.4.rst
index 25db2ef7253d9..b09d14010545c 100644
--- a/doc/source/whatsnew/v1.4.4.rst
+++ b/doc/source/whatsnew/v1.4.4.rst
@@ -22,6 +22,7 @@ Fixed regressions
- Fixed regression in :meth:`DataFrame.loc` not aligning index in some cases when setting ... |
pandas-dev__pandas-54388 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/dtypes/common.py:pandas_dtype"
],
"edited_modules": [
"pandas/core/dtypes/common.py:pandas_dtype"
]
},
"file": "pandas/core/dtypes/common.py"
}
] | pandas-dev/pandas | 232d84e9a5add831c753e67f1c88863442dc3c92 | BUG: `Series.astype("object_")` and `Series.astype("object0")` unsupported.
### 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.
- [ ] I have co... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index bc187361493c0..914f6d4d9b566 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -487,6 +487,7 @@ Conversion
- Bug in :meth:`DataFrame.info` raising ``ValueError`` when ``use_numba`` is set (:issue:`5192... |
pandas-dev__pandas-51395 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/frame.py:DataFrame.groupby"
],
"edited_modules": [
"pandas/core/frame.py:DataFrame"
]
},
"file": "pandas/core/frame.py"
},
{
"changes": {
"add... | pandas-dev/pandas | 3d47fb960892eac1b081fff1772d62131410c405 | DEPR: DataFrame.groupby(axis=1)
It isn't obvious to me what you can do with `df.groupby(axis=1)` that you can't do with `df.T.groupby(axis=0)`. In many cases we do the transpose under the hood anyway, so it isn't saving much/anything perf-wise.
| diff --git a/doc/source/user_guide/categorical.rst b/doc/source/user_guide/categorical.rst
index 1bd20b54242e6..0b2224fe9bb32 100644
--- a/doc/source/user_guide/categorical.rst
+++ b/doc/source/user_guide/categorical.rst
@@ -617,8 +617,8 @@ even if some categories are not present in the data:
df = pd.DataFrame(
... |
pandas-dev__pandas-50844 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/series.py:Series.drop_duplicates"
],
"edited_modules": [
"pandas/core/series.py:Series"
]
},
"file": "pandas/core/series.py"
}
] | pandas-dev/pandas | 305c938fabc0d66947b387ce6b8c4f365129bf87 | ENH: Add ignore_index to Series.drop_duplicates
### Feature Type
- [X] Adding new functionality to pandas
- [ ] Changing existing functionality in pandas
- [ ] Removing existing functionality in pandas
### Problem Description
Appears in 1.0, `DataFrame.drop_duplicates` gained `ignore_index`: https://pandas.pydata... | diff --git a/doc/source/whatsnew/v2.0.0.rst b/doc/source/whatsnew/v2.0.0.rst
index 7054d93457264..b5b466edaccbe 100644
--- a/doc/source/whatsnew/v2.0.0.rst
+++ b/doc/source/whatsnew/v2.0.0.rst
@@ -161,6 +161,7 @@ Other enhancements
- Added :meth:`Index.infer_objects` analogous to :meth:`Series.infer_objects` (:issue:`... |
pandas-dev__pandas-54186 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/computation/pytables.py:BinOp.convert_value"
],
"edited_modules": [
"pandas/core/computation/pytables.py:BinOp"
]
},
"file": "pandas/core/computation/pytabl... | pandas-dev/pandas | 406abd95647386d136000613b6a754d40e90d0df | BUG: HDFStore select where condition doesn't work for large integer
### 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 b... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index 6c2784bc93b0c..b0c2b845073f6 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -481,7 +481,7 @@ Conversion
- Bug in :meth:`DataFrame.__repr__` incorrectly raising a ``TypeError`` when the dtype of a col... |
pandas-dev__pandas-55777 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": null,
"edited_modules": null
},
"file": "pandas/core/arrays/arrow/__init__.py"
},
{
"changes": {
"added_entities": [
"pandas/core/arrays/arrow/accessors.py:ArrowAccessor.__init_... | pandas-dev/pandas | 0cdb37c445fc0a0a2144f981fd1acbf4f07d88ee | ENH: Add list accessor for PyArrow list types to support __getitem__
### 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 ... | diff --git a/doc/source/reference/series.rst b/doc/source/reference/series.rst
index 9acbab7a42800..af262f9e6c336 100644
--- a/doc/source/reference/series.rst
+++ b/doc/source/reference/series.rst
@@ -526,6 +526,23 @@ Sparse-dtype specific methods and attributes are provided under the
Series.sparse.to_coo
+.. _... |
pandas-dev__pandas-49864 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/groupby/groupby.py:GroupBy._transform"
],
"edited_modules": [
"pandas/core/groupby/groupby.py:GroupBy"
]
},
"file": "pandas/core/groupby/groupby.py"
}
] | pandas-dev/pandas | d1ecf63e2040daecad6e0a8485a35e8a23393795 | BUG: transform("max") replaces all entries with NaN when applied after groupby with as_index=False
### 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.... | diff --git a/doc/source/whatsnew/v1.5.3.rst b/doc/source/whatsnew/v1.5.3.rst
index d35d3bf8b89ca..d65446604a83f 100644
--- a/doc/source/whatsnew/v1.5.3.rst
+++ b/doc/source/whatsnew/v1.5.3.rst
@@ -14,6 +14,7 @@ including other versions of pandas.
Fixed regressions
~~~~~~~~~~~~~~~~~
- Fixed performance regression in ... |
pandas-dev__pandas-47451 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/frame.py:DataFrame.from_dict"
],
"edited_modules": [
"pandas/core/frame.py:DataFrame"
]
},
"file": "pandas/core/frame.py"
}
] | pandas-dev/pandas | 878504dc31fa3c3e1d6006e0762ffc99850ac2f0 | BUG: Wrong error message output for pd.DataFrame.from_dict
### 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... | diff --git a/doc/source/whatsnew/v1.4.3.rst b/doc/source/whatsnew/v1.4.3.rst
index 39e9a55b5c384..70b451a231453 100644
--- a/doc/source/whatsnew/v1.4.3.rst
+++ b/doc/source/whatsnew/v1.4.3.rst
@@ -52,6 +52,7 @@ Bug fixes
~~~~~~~~~
- Bug in :func:`pandas.eval`, :meth:`DataFrame.eval` and :meth:`DataFrame.query` where ... |
pandas-dev__pandas-57139 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/common.py:asarray_tuplesafe"
],
"edited_modules": [
"pandas/core/common.py:asarray_tuplesafe"
]
},
"file": "pandas/core/common.py"
}
] | pandas-dev/pandas | dc5586baa9e47318051ce311b4f4da765e632490 | BUG: empty dataframe indexing raises ValueError: buffer source array is read-only only when coming from db
### 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... | diff --git a/doc/source/whatsnew/v2.2.1.rst b/doc/source/whatsnew/v2.2.1.rst
index ff5fadec735e6..adf79ef5e7714 100644
--- a/doc/source/whatsnew/v2.2.1.rst
+++ b/doc/source/whatsnew/v2.2.1.rst
@@ -27,7 +27,7 @@ Fixed regressions
Bug fixes
~~~~~~~~~
--
+- Fixed bug in :meth:`DataFrame.__getitem__` for empty :class:`... |
pandas-dev__pandas-53641 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/dtypes/concat.py:concat_compat"
],
"edited_modules": [
"pandas/core/dtypes/concat.py:concat_compat"
]
},
"file": "pandas/core/dtypes/concat.py"
}
] | pandas-dev/pandas | 984d75543fce5c68f0dcc4f0b3500256e4a9c0c9 | BUG: `pd.concat` dataframes with different datetime64 types
### Pandas version checks
- [X] I have checked that this issue has not already been reported.
- [ ] 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 exist... | diff --git a/pandas/core/dtypes/concat.py b/pandas/core/dtypes/concat.py
index b489c14ac0c42..9ec662a6cd352 100644
--- a/pandas/core/dtypes/concat.py
+++ b/pandas/core/dtypes/concat.py
@@ -129,7 +129,16 @@ def concat_compat(
# i.e. isinstance(to_concat[0], ExtensionArray)
to_concat_eas = cast("Sequenc... |
pandas-dev__pandas-51175 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/arrays/arrow/array.py:ArrowExtensionArray._from_sequence_of_strings"
],
"edited_modules": [
"pandas/core/arrays/arrow/array.py:ArrowExtensionArray"
]
},
"fi... | pandas-dev/pandas | 8661548d12fa6809e89e5771e87562867a5ad3a9 | CI: pyarrow 11 broke ci
The new pyarrow fails 4 tests. We already pinned to < 11 to keep ci green.
https://app.circleci.com/pipelines/github/pandas-dev/pandas/23874/workflows/5f47d077-f9c7-46d1-8fe2-0a6977ef5444/jobs/54659
| diff --git a/.github/actions/setup-conda/action.yml b/.github/actions/setup-conda/action.yml
index f4b1d9e49f63a..002d0020c2df1 100644
--- a/.github/actions/setup-conda/action.yml
+++ b/.github/actions/setup-conda/action.yml
@@ -18,7 +18,7 @@ runs:
- name: Set Arrow version in ${{ inputs.environment-file }} to ${{... |
pandas-dev__pandas-54428 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/internals/managers.py:make_na_array"
],
"edited_modules": [
"pandas/core/internals/managers.py:make_na_array"
]
},
"file": "pandas/core/internals/managers.p... | pandas-dev/pandas | f32c52d07c71c38c02edc3b9a3ef9d6915c13aa5 | BUG: AttributeError raised with pd.concat between a None and Timestamp
### 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 thi... | diff --git a/doc/source/whatsnew/v2.2.0.rst b/doc/source/whatsnew/v2.2.0.rst
index 9eb5bbc8f07d5..e3d17977ad26c 100644
--- a/doc/source/whatsnew/v2.2.0.rst
+++ b/doc/source/whatsnew/v2.2.0.rst
@@ -301,6 +301,7 @@ Categorical
Datetimelike
^^^^^^^^^^^^
+- Bug in :func:`concat` raising ``AttributeError`` when concaten... |
pandas-dev__pandas-50760 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/internals/blocks.py:Block.replace"
],
"edited_modules": [
"pandas/core/internals/blocks.py:Block"
]
},
"file": "pandas/core/internals/blocks.py"
},
{
... | pandas-dev/pandas | d3f0e9a95d220cd349fbc2d9b107ebebc5d7b58a | BUG: pd.DataFrame.replace integer/float value to pd.NA causes RecursionError
### 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 c... | diff --git a/doc/source/whatsnew/v2.0.0.rst b/doc/source/whatsnew/v2.0.0.rst
index 033f47f0c994d..f734db1419282 100644
--- a/doc/source/whatsnew/v2.0.0.rst
+++ b/doc/source/whatsnew/v2.0.0.rst
@@ -980,6 +980,8 @@ Missing
- Bug in :meth:`Series.map` caused incorrect result when data has NaNs and defaultdict mapping was... |
pandas-dev__pandas-56385 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/arrays/categorical.py:Categorical._replace"
],
"edited_modules": [
"pandas/core/arrays/categorical.py:Categorical"
]
},
"file": "pandas/core/arrays/categori... | pandas-dev/pandas | 5e0df27fadfeb29e76336b527f4c01cd2f575136 | DEPR/API: Series[categorical].replace behavior
Discussed briefly at the sprint and achieved consensus:
NDFrame.replace behaves differently with Categorical dtypes than it does with everything else (the special casing occurs in Block.replace and Block.replace_list), changing the dtype in addition to the values. We s... | diff --git a/doc/source/whatsnew/v2.2.0.rst b/doc/source/whatsnew/v2.2.0.rst
index c878fd2664dc4..5dd04986dcd3e 100644
--- a/doc/source/whatsnew/v2.2.0.rst
+++ b/doc/source/whatsnew/v2.2.0.rst
@@ -473,6 +473,7 @@ Other Deprecations
- Deprecated the ``kind`` keyword in :meth:`Series.resample` and :meth:`DataFrame.resam... |
pandas-dev__pandas-51005 | [
{
"changes": {
"added_entities": [
"pandas/core/internals/blocks.py:DatetimeLikeBlock.interpolate"
],
"added_modules": null,
"edited_entities": [
"pandas/core/internals/blocks.py:EABackedBlock.interpolate"
],
"edited_modules": [
"pandas/core/internals/... | pandas-dev/pandas | 9277f93d37f207fe50d8318686fc59f637922fdd | ENH: interpolation of datetime values (NaT)
I didn't directly found an open issue about it, but is there a reason we do not implement interpolation of datetime _values_ (so not in the index)?
Example:
```
In [14]: s = pd.Series(pd.date_range('2012-01-01', periods=5))
In [16]: s[2] = np.nan
In [17]: s
Out[17]:
0 2... | diff --git a/doc/source/whatsnew/v2.0.0.rst b/doc/source/whatsnew/v2.0.0.rst
index bd1a92be0de80..265643b219bec 100644
--- a/doc/source/whatsnew/v2.0.0.rst
+++ b/doc/source/whatsnew/v2.0.0.rst
@@ -1105,6 +1105,7 @@ Datetimelike
- Bug in :func:`to_datetime` was raising ``ValueError`` when parsing mixed-offset :class:`T... |
pandas-dev__pandas-51191 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/arrays/string_.py:StringArray.__setitem__"
],
"edited_modules": [
"pandas/core/arrays/string_.py:StringArray"
]
},
"file": "pandas/core/arrays/string_.py"
... | pandas-dev/pandas | 808e56eb2a60685ba167bb2c523e8f844652f46b | BUG: Differences in setting value error between string dtype and others
### 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.
- [ ] I have confi... | diff --git a/doc/source/whatsnew/v2.0.0.rst b/doc/source/whatsnew/v2.0.0.rst
index ef6bb1340dc69..64f21e027e048 100644
--- a/doc/source/whatsnew/v2.0.0.rst
+++ b/doc/source/whatsnew/v2.0.0.rst
@@ -1324,6 +1324,7 @@ ExtensionArray
- Bug in :meth:`api.types.is_numeric_dtype` where a custom :class:`ExtensionDtype` would ... |
pandas-dev__pandas-54115 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/frame.py:DataFrame.shift"
],
"edited_modules": [
"pandas/core/frame.py:DataFrame"
]
},
"file": "pandas/core/frame.py"
},
{
"changes": {
"added... | pandas-dev/pandas | e4b085c61c80deac765359f57046756c0731174b | ENH: pd.Series.shift and .diff to accept a collection of numbers
#### Is your feature request related to a problem?
No
#### Describe the solution you'd like
`pd.DataFrame.shift`/`pd.Series.shift` could alternatively accept a list of ints or a collection of numbers, and the result would be a dataframe with one ... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index 8cf7543ae075b..46ca987d7b95b 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -168,6 +168,7 @@ Other enhancements
- Added :meth:`ExtensionArray.interpolate` used by :meth:`Series.interpolate` and :meth... |
pandas-dev__pandas-53301 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/tools/datetimes.py:_convert_listlike_datetimes"
],
"edited_modules": [
"pandas/core/tools/datetimes.py:_convert_listlike_datetimes"
]
},
"file": "pandas/cor... | pandas-dev/pandas | 1e90f9e3c5371bf65347bc1ea5e9b3cef9dfa189 | PERF: to_datetime doesn't recognise Arrow date time dtypes and converts them again
### Pandas version checks
- [X] I have checked that this issue has not already been reported.
- [X] I have confirmed this issue exists on the [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
- [ ] ... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index 198a7155e1a1e..f9e920aed46ea 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -371,6 +371,7 @@ Datetimelike
- :meth:`DatetimeIndex.map` with ``na_action="ignore"`` now works as expected. (:issue:`51644... |
pandas-dev__pandas-55670 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/reshape/merge.py:_AsOfMerge._get_join_indexers"
],
"edited_modules": [
"pandas/core/reshape/merge.py:_AsOfMerge"
]
},
"file": "pandas/core/reshape/merge.py"... | pandas-dev/pandas | e48df1cf18cb1a5d21085e55dd05d0b6c988ab51 | BUG: merge_asof does not work with datetime by column on Pandas 2.1.x
### 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... | diff --git a/doc/source/whatsnew/v2.1.2.rst b/doc/source/whatsnew/v2.1.2.rst
index 8298cc0607512..cca508a4d04b9 100644
--- a/doc/source/whatsnew/v2.1.2.rst
+++ b/doc/source/whatsnew/v2.1.2.rst
@@ -17,6 +17,7 @@ Fixed regressions
- Fixed regression in :meth:`DataFrame.resample` which was extrapolating back to ``origin`... |
pandas-dev__pandas-56484 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/construction.py:array"
],
"edited_modules": [
"pandas/core/construction.py:array"
]
},
"file": "pandas/core/construction.py"
}
] | pandas-dev/pandas | 4f7cb743533d21d3025f9b4fd2f4f1854977cc63 | REF: Deduplicate array, infer_dtype, and maybe_convert_objects
There's some duplicate / slightly diverging functionality between `pd.array`, `infer_dtype` and `convert_objects`. Both `pd.array` and `convert_objects` are roughly "convert this list-like thing to this better array". See the conversation in https://github... | diff --git a/pandas/_libs/lib.pyx b/pandas/_libs/lib.pyx
index 24afbe3a07bf1..5b6d83ba8e9ee 100644
--- a/pandas/_libs/lib.pyx
+++ b/pandas/_libs/lib.pyx
@@ -2628,7 +2628,11 @@ def maybe_convert_objects(ndarray[object] objects,
seen.object_ = True
break
elif val is C_NA:
- ... |
pandas-dev__pandas-52268 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/groupby/generic.py:SeriesGroupBy._aggregate_multiple_funcs"
],
"edited_modules": [
"pandas/core/groupby/generic.py:SeriesGroupBy",
"pandas/core/groupby/generic.py... | pandas-dev/pandas | ceef0da443a7bbb608fb0e251f06ae43a809b472 | DEPR: SeriesGroupBy.agg with dict argument
Edit: Instead of implementing the `as_index=True` case mentioned below, the `as_index=False` case should be deprecated, and the docs to SeriesGroupBy.agg should be updated. See the discussion below for details.
According to https://github.com/pandas-dev/pandas/pull/15931#is... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index 3a749708fb526..bf9c666ea521d 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -122,6 +122,7 @@ Deprecations
- Deprecated 'method', 'limit', and 'fill_axis' keywords in :meth:`DataFrame.align` and :meth... |
pandas-dev__pandas-48970 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/tools/datetimes.py:_guess_datetime_format_for_array"
],
"edited_modules": [
"pandas/core/tools/datetimes.py:_guess_datetime_format_for_array"
]
},
"file": "... | pandas-dev/pandas | c34da509497717308c97c4a211ad3ff9bab92d87 | BUG: to_datetime(..., infer_datetime_format=True) fails if argument is np.str_
### 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 confi... | diff --git a/pandas/_libs/tslibs/parsing.pyx b/pandas/_libs/tslibs/parsing.pyx
index 763530520cd29..51bb21404e7b5 100644
--- a/pandas/_libs/tslibs/parsing.pyx
+++ b/pandas/_libs/tslibs/parsing.pyx
@@ -963,10 +963,6 @@ def guess_datetime_format(dt_str: str, bint dayfirst=False) -> str | None:
datetime format st... |
pandas-dev__pandas-56120 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/frame.py:DataFrame._set_item_frame_value"
],
"edited_modules": [
"pandas/core/frame.py:DataFrame"
]
},
"file": "pandas/core/frame.py"
}
] | pandas-dev/pandas | 38e29ab7d049015b428a880ed0a160b10418fae6 | BUG: Unclear error message assign a column with an empty DataFrame
Edit: This turned out to be an issue with the error message when setting a single column using a DataFrame with no columns; see https://github.com/pandas-dev/pandas/issues/55956#issuecomment-1819359136 - rhshadach
### Pandas version checks
- [X] I... | diff --git a/doc/source/whatsnew/v2.2.0.rst b/doc/source/whatsnew/v2.2.0.rst
index 280eb11abb781..a23270fba9c9e 100644
--- a/doc/source/whatsnew/v2.2.0.rst
+++ b/doc/source/whatsnew/v2.2.0.rst
@@ -496,6 +496,7 @@ Other
- Bug in :meth:`Dataframe.from_dict` which would always sort the rows of the created :class:`DataFra... |
pandas-dev__pandas-50876 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/resample.py:_GroupByMixin._gotitem"
],
"edited_modules": [
"pandas/core/resample.py:_GroupByMixin"
]
},
"file": "pandas/core/resample.py"
}
] | pandas-dev/pandas | 05d12b5eb9ef3ef0ef697dac92e3548371b6dcd1 | BUG: df.groupby().resample()[[cols]] raise KeyError when resampling on index
### 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 confirm... | diff --git a/doc/source/whatsnew/v2.0.0.rst b/doc/source/whatsnew/v2.0.0.rst
index 7555c8b68a4f7..986e5891033a1 100644
--- a/doc/source/whatsnew/v2.0.0.rst
+++ b/doc/source/whatsnew/v2.0.0.rst
@@ -1096,6 +1096,7 @@ Groupby/resample/rolling
- Bug in :meth:`.DataFrameGroupBy.transform` and :meth:`.SeriesGroupBy.transfor... |
pandas-dev__pandas-49348 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/arrays/datetimes.py:sequence_to_datetimes",
"pandas/core/arrays/datetimes.py:_sequence_to_dt64ns",
"pandas/core/arrays/datetimes.py:objects_to_datetime64ns"
],
"e... | pandas-dev/pandas | 86b962821a02a7c6459aa15be735c1a5bb7f21b1 | API: Series(mixed_datetime_and_ints, dtype="M8[ns]") vs DatetimeIndex(same) mismatch
```python
values = [pd.Timestamp.now(), 1]
pd.Series(values, dtype="M8[ns]") # <- casts
pd.DatetimeIndex(values, dtype="M8[ns]") # <- raises
pd.to_datetime(values) # <- raises
```
These should either all cast or all raise. ... | diff --git a/doc/source/whatsnew/v2.0.0.rst b/doc/source/whatsnew/v2.0.0.rst
index 2daba0752a987..b568275e7e14e 100644
--- a/doc/source/whatsnew/v2.0.0.rst
+++ b/doc/source/whatsnew/v2.0.0.rst
@@ -245,6 +245,7 @@ Other API changes
- The ``other`` argument in :meth:`DataFrame.mask` and :meth:`Series.mask` now defaults ... |
pandas-dev__pandas-48167 | [
{
"changes": {
"added_entities": [
"pandas/core/indexes/datetimes.py:DatetimeIndex._can_range_setop"
],
"added_modules": null,
"edited_entities": null,
"edited_modules": [
"pandas/core/indexes/datetimes.py:DatetimeIndex"
]
},
"file": "pandas/core/index... | pandas-dev/pandas | 221f6362bc25833da87f00015d4d5418ee316eff | BUG: `DatetimeIndex.intersection` not working for localized indices
### 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.
- [ ] I have confirmed this b... | diff --git a/doc/source/whatsnew/v1.4.4.rst b/doc/source/whatsnew/v1.4.4.rst
index 2f290217bf985..25db2ef7253d9 100644
--- a/doc/source/whatsnew/v1.4.4.rst
+++ b/doc/source/whatsnew/v1.4.4.rst
@@ -22,6 +22,7 @@ Fixed regressions
- Fixed regression in :meth:`DataFrame.loc` not aligning index in some cases when setting ... |
pandas-dev__pandas-57372 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/series.py:Series.to_markdown"
],
"edited_modules": [
"pandas/core/series.py:Series"
]
},
"file": "pandas/core/series.py"
}
] | pandas-dev/pandas | 63dc0f76faa208450b8aaa57246029fcf94d015b | DEPR: Positional arguments in Series.to_markdown/string
While most method were captured in https://github.com/pandas-dev/pandas/issues/54229, `Series.to_string` and `Series.to_markdown` were missed
| diff --git a/doc/source/whatsnew/v3.0.0.rst b/doc/source/whatsnew/v3.0.0.rst
index 77c80dcfe7c7e..4620de570e230 100644
--- a/doc/source/whatsnew/v3.0.0.rst
+++ b/doc/source/whatsnew/v3.0.0.rst
@@ -102,6 +102,7 @@ Deprecations
~~~~~~~~~~~~
- Deprecated :meth:`Timestamp.utcfromtimestamp`, use ``Timestamp.fromtimestamp(... |
pandas-dev__pandas-53709 | [
{
"changes": {
"added_entities": null,
"added_modules": null,
"edited_entities": [
"pandas/core/arrays/period.py:_get_ordinal_range"
],
"edited_modules": [
"pandas/core/arrays/period.py:_get_ordinal_range"
]
},
"file": "pandas/core/arrays/period.py"
... | pandas-dev/pandas | 0bc16da1e53e9a4d637cf81c770e6517da65a029 | BUG: `period_range` gives incorrect output
### 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.
- [ ] I have confirmed this bug exists on the [main br... | diff --git a/doc/source/whatsnew/v2.1.0.rst b/doc/source/whatsnew/v2.1.0.rst
index e2f0904a78cf9..81bd6758231fd 100644
--- a/doc/source/whatsnew/v2.1.0.rst
+++ b/doc/source/whatsnew/v2.1.0.rst
@@ -518,6 +518,7 @@ Other
- Bug in :meth:`Series.align`, :meth:`DataFrame.align`, :meth:`Series.reindex`, :meth:`DataFrame.rei... |
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