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Issues: pandas-dev/pandas
FEEDBACK: PyArrow as a required dependency and PyArrow backed...
#54466
opened Aug 9, 2023 by
phofl
Open
148
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ENH: Restore the functionality of Unexpected or buggy dtype conversions
Enhancement
Missing-data
np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
Needs Discussion
Requires discussion from core team before further action
Needs Info
Clarification about behavior needed to assess issue
.fillna
Dtype Conversions
#59831
opened Sep 18, 2024 by
tomprimozic
1 of 3 tasks
BUG: converting null timedelta to int with astype() changes NaT to -9223372036854775808
Bug
Dtype Conversions
Unexpected or buggy dtype conversions
Missing-data
np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
Needs Discussion
Requires discussion from core team before further action
#59711
opened Sep 4, 2024 by
sfc-gh-mvashishtha
2 of 3 tasks
BUG: Incorrect float32/float64 comparison result
Bug
Closing Candidate
May be closeable, needs more eyeballs
Dtype Conversions
Unexpected or buggy dtype conversions
#59524
opened Aug 15, 2024 by
alexowens90
3 tasks done
BUG: read_json silently ignores the dtype when engine=pyarrow
Bug
Dtype Conversions
Unexpected or buggy dtype conversions
IO JSON
read_json, to_json, json_normalize
#59516
opened Aug 14, 2024 by
benjamin-hodgson
3 tasks done
DEPR: future.no_silent_downcasting option
Deprecate
Functionality to remove in pandas
Dtype Conversions
Unexpected or buggy dtype conversions
#59502
opened Aug 13, 2024 by
jbrockmendel
3 tasks done
BUG: Can't store Series/DataFrame/Index/pd.array Constructors
Dtype Conversions
Unexpected or buggy dtype conversions
IntEnum
members inside a pd.DataFrame
column of object
dtype. If you use pd.Series
it works
Bug
Constructors
#59380
opened Aug 1, 2024 by
willofferfit
2 of 3 tasks
API: pd.StringDtype.value_counts should return pd.Int64Dtype
API - Consistency
Internal Consistency of API/Behavior
API Design
Arrow
pyarrow functionality
Dtype Conversions
Unexpected or buggy dtype conversions
ExtensionArray
Extending pandas with custom dtypes or arrays.
#59346
opened Jul 29, 2024 by
WillAyd
1 of 3 tasks
BUG: read_sql tries to convert blob/varbinary to string with pyarrow backend
Arrow
pyarrow functionality
Bug
Dtype Conversions
Unexpected or buggy dtype conversions
IO SQL
to_sql, read_sql, read_sql_query
#59242
opened Jul 13, 2024 by
dbrownems
3 tasks done
DEPR: Functionality to remove in pandas
Dtype Conversions
Unexpected or buggy dtype conversions
IO JSON
read_json, to_json, json_normalize
keep_default_dates
and convert_dates
in read_json
Deprecate
#59161
opened Jul 1, 2024 by
mroeschke
BUG: Accessing a row with loc recasts dtype and can cause values to change depending on other columns
API Design
Dtype Conversions
Unexpected or buggy dtype conversions
Needs Discussion
Requires discussion from core team before further action
#59008
opened Jun 13, 2024 by
ceesem
3 tasks done
BUG: Unexpected cast to float for Unexpected or buggy dtype conversions
Groupby
numba
numba-accelerated operations
DataFrame.groupby().agg(engine="numba")
Bug
Dtype Conversions
#58869
opened May 30, 2024 by
willsthompson
2 of 3 tasks
BUG: pd.concat fails with large index values when using ArrowDtype
Arrow
pyarrow functionality
Bug
Dtype Conversions
Unexpected or buggy dtype conversions
Reshaping
Concat, Merge/Join, Stack/Unstack, Explode
#58819
opened May 24, 2024 by
hombit
3 tasks done
BUG: .max() raises exception on Series with object dtype and mixture of Timestamp and NaT: TypeError: '>=' not supported between instances of 'Timestamp' and 'float'
Bug
Dtype Conversions
Unexpected or buggy dtype conversions
Reshaping
Concat, Merge/Join, Stack/Unstack, Explode
Timezones
Timezone data dtype
#58707
opened May 13, 2024 by
kerrickstaley
2 of 3 tasks
BUG: DataFrame.convert_dtype(convert_integer=True) with int64_t limits throws Warning
Bug
Dtype Conversions
Unexpected or buggy dtype conversions
Warnings
Warnings that appear or should be added to pandas
#58485
opened Apr 30, 2024 by
Tishj
2 of 3 tasks
ENH: Infer column dtype when constructing object with pd.NA
Dtype Conversions
Unexpected or buggy dtype conversions
Enhancement
NA - MaskedArrays
Related to pd.NA and nullable extension arrays
Needs Discussion
Requires discussion from core team before further action
#58366
opened Apr 22, 2024 by
amanlai
1 of 3 tasks
What's the design decision regarding whether operations can return another backend's object?
Arrow
pyarrow functionality
Dtype Conversions
Unexpected or buggy dtype conversions
NA - MaskedArrays
Related to pd.NA and nullable extension arrays
pyarrow dtype retention
op with pyarrow dtype -> expect pyarrow result
Usage Question
#58312
opened Apr 18, 2024 by
anmyachev
BUG: Behaviour of sum/mean on sparse boolean arrays changed between 1.5.3 and pandas 2.2
Bug
Dtype Conversions
Unexpected or buggy dtype conversions
ExtensionArray
Extending pandas with custom dtypes or arrays.
Reduction Operations
sum, mean, min, max, etc.
#58015
opened Mar 26, 2024 by
CompRhys
2 of 3 tasks
DOC: Series.diff with boolean dtype does not return a series of dtype float
Docs
Dtype Conversions
Unexpected or buggy dtype conversions
Needs Discussion
Requires discussion from core team before further action
Transformations
e.g. cumsum, diff, rank
#57565
opened Feb 22, 2024 by
from-nowhere
1 task done
BUG: Unexpected read_csv parse_dates behavior
Bug
datetime.date
stdlib datetime.date support
Dtype Conversions
Unexpected or buggy dtype conversions
IO CSV
read_csv, to_csv
#57512
opened Feb 19, 2024 by
kounoupis
2 of 3 tasks
BUG: pyarrow functionality
Bug
Dtype Conversions
Unexpected or buggy dtype conversions
Needs Discussion
Requires discussion from core team before further action
pyarrow dtype retention
op with pyarrow dtype -> expect pyarrow result
KeyError: DictionaryType
when converting to/from PyArrow backend
Arrow
#57395
opened Feb 13, 2024 by
ajfriend
2 of 3 tasks
BUG: to_numeric loses precision when converting decimal type to integer
Bug
Dtype Conversions
Unexpected or buggy dtype conversions
#57213
opened Feb 2, 2024 by
sfc-gh-aalam
2 of 3 tasks
BUG: DataFrame.update() raises FutureWarning due to the use of 'where' method
Bug
Conditionals
E.g. where, mask, case_when
DataFrame
DataFrame data structure
Dtype Conversions
Unexpected or buggy dtype conversions
Regression
Functionality that used to work in a prior pandas version
BUG: Can't convert pyarrow functionality
Bug
Dtype Conversions
Unexpected or buggy dtype conversions
Missing-data
np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
int64[pyarrow]
series with missing values to legacy numpy float
series
Arrow
#57093
opened Jan 26, 2024 by
mattharrison
2 of 3 tasks
BUG: df.iloc[:, x] = df.iloc[:, x].apply(int) will failed just and only when May be closeable, needs more eyeballs
Dtype Conversions
Unexpected or buggy dtype conversions
Indexing
Related to indexing on series/frames, not to indexes themselves
Needs Triage
Issue that has not been reviewed by a pandas team member
PDEP6-related
related to PDEP6 (not upcasting during setitem-like Series operations)
int
in apply()
Bug
Closing Candidate
#56796
opened Jan 9, 2024 by
tomy128
3 tasks done
BUG: Concat for two dataframes row-wise fails if one of columns is datetime and iterrows was used
Bug
datetime.date
stdlib datetime.date support
Dtype Conversions
Unexpected or buggy dtype conversions
#56779
opened Jan 8, 2024 by
ilyakochik
2 of 3 tasks
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