Description
xref #30228
When opening a PR that introduces a deprecation (starts warning), please add it to this list, so we know what needs to be fully deprecated when releasing pandas 3.0.
2.0
- DEPR: allowing unknown array-likes in merge #48454
- DEPR: positional arguments in favor of keyword arguments #48735
- DEPR: deprecate Index.is_boolean #50176
- DEPR: deprecate Index.is_integer #50178
- DEPR: deprecate Index.is_interval #50196
- DEPR: deprecate Index.is_floating #50235
- DEPR: deprecate Index.is_numeric #50769
- DEPR: deprecate Index.is_object #50227
- DEPR: deprecate Index.is_categorical #50225
- DEPR: deprecate Index.holds_integer #50243
- DEPR: Remove unnecessary kwargs in groupby ops #50483
- DEPR: ADD FutureWarning for pandas.io.execute #50676
- DEPR: Grouper.grouper, Grouper.groups #51182
- DEPR: Remove *args and **kwargs on resample methods #51042
- API deprecate date_parser, add date_format #51019
- DEP: Deprecated pad/backfill for Series/DataFrame #51221
- DEPR: Grouper.ax, Grouper.obj, Grouper.indexer #51206
- DEPR: Properly enforce group_keys defaulting to False in resample #52071
- DEPR: dt64 any/all GH#34479 #50947
2.1
- DEPR: deprecate allowing slice in DataFrame.take #51539
- DEPR: silently ignoring unrecognized timezones #51477
- DEP: Deprecate passing a DataFrame to from_records #51697
- DEPR: DataFrame.groupby(axis=1) #51395
- DEPR: pinning name in SeriesGroupBy.agg #51703
- DEPR: added deprecation warning for NDFrame.bool #51756
- DEPR: observed=False default in groupby #51811
- DEPR: method, limit, fill_axis keywords in align #51968
- DEPR: NDFrame._data #52003
- DEPR: Deprecate the convert_dtype param in Series.Apply #52257
- DEPR: Passing a dictionary to SeriesGroupBy.agg #52268
- DEPR: groupby with as_index=False not including out-of-axis groupings #52333
- API/DEPR: Rename DataFrame.applymap to DataFrame.map #52364
- DEPR: to_pydatetime return Index[object] #52459 (change behavior)
- DEPR: Series.first() and DataFrame.first() #53419
- DEPR: make Series.agg aggregate when possible #53325
- DEPR: pd.value_counts #53493
- DEPR: NDFrame.interpolate with ffill/bfill methods #53607
- DEPR: interpolate with object dtype #53638
- DEPR: method, limit in NDFrame.replace #53492 (closed by DEPR: replace method/limit keywords #58039)
- DEPR: deprecate obj argument in GroupBy.get_group #53571 (closed by DEPR: removed deprecated argument
objfrom GroupByget_group#57136) - DEPR: deprecate unit parameters ’T’, 't', 'L', and 'l' #53557
- DEPR: Deprecate literal json string input to read_json #53409
- DEPR: Deprecate DataFrame.last and Series.last #53710
- DEPR: Remove bytes input for read_excel #53830
- DEPR: Remove literal string input for read_html #53805
- DEPR: downcast keyword #53671
- DEPR: start with Deprecation instead of FutureWarning for NDFrame._data #53994
- DEPR: GroupBy.quantile with bool dtype #53975
- DEPR: downcast keyword in Index.fillna #53956
- DEPR: Replacing builtin and NumPy funcs in agg/apply/transform #53974
- DEPR: concat ignoring empty objects #52532
- DEPR: Deprecate use of un-supported numpy dt64/td64 dtype for pandas.array #53817
- DEPR: Remove literal string input for read_xml #53809
- ENH: better dtype inference when doing DataFrame reductions #52788 (remove
keepdimscheck insideblk_funcinDataFrame._reduce) - DEPR: argmin/argmax with all-NA or skipa=False #54170
- DEPR: Period[B] #53511
- DEPR: idxmin/idxmax with all-NA #54226
- DEPR: Series.argsort NA behavior #54219
- DEPR: passing mixed offsets with utc=False into to_datetime #54014
- DEPR: int slicing always positional #53338
- DEPR: Positional arguments in to_sql except name #54397
- DEPR: Nonkeyword arguments in to_pickle #54599
- DEPR: Nonkeyword arguments in to_latex #54601
- DEPR: deprecated nonkeyword arguments for to_string #54597
- DEPR: deprecated nonkeyword arguments in to_json #54613
- DEPR: deprecated nonkeyword arguments in to_markdown #54605
- DEPR: Not passing tuple to get_group when grouping on length-1 list-likes #54155
- DEPR: deprecated nonkeyword arguments in to_html #54612
- DEPR: deprecated nonkeyword arguments in to_csv #54632
- DEPR: deprecated nonkeyword arguments in to_parquet #54631
- DEPR: BaseNoReduceTests #54663
- DEPR: make arguments keyword only in to_clipboard #54634
- DEPR: make arguments keyword only in to_dict #54630
- DEPR: deprecated nonkeyword arguments in to_gbq #54704
- DEPR: deprecated nonkeyword arguments in to_excel #54703
- DEP: Deprecate passing fill_value and freq to shift #54818
- DEPR: deprecate strings T, S, L, U, and N in offsets frequencies, resolution abbreviations, _attrname_to_abbrevs #54061
- DEPR: downcasting in NDFrame.where, mask, clip #53656
- DEPR: DataFrameGroupBy.apply operating on the group keys #54950
- DEPR: downcasting in replace #54710
- DEPR: fillna downcasting from object dtype #54261
- DEPR: ArrayManager #55044
- TYP: overload for DataFrame.to_xml #55313
- DEPR: 'A' for yearly frequency and YearEnd in favour of 'Y' #55252
- DEPR: deprecate string H, BH, CBH in offsets frequencies, resolution abbreviations, _attrname_to_abbrevs #54939
- DEPR: Series constructor fastpath keyword #55466
- DEPR: ‘AS’, ‘BA’ and ‘BAS’ in favour of ‘YS’, ‘BY’ and ‘BYS’ #55479
- DEPR: Index.format #55439
- DEPR: rename ‘BM’/‘CBM’ to ‘BME’/‘CBME’ for offsets #55496
- DEPR: Previous implementation of DataFrame.stack #55448
- DEPR: create_block_manager_from_blocks #55355
- DEPR: accepting Manager objects in DataFrame/Series #52419
- DEPR: correct class of Warning for offsets deprecated frequency ('M' to 'ME') #55636
- DEPR offsets: rename 'Q' to 'QE' #55553
- DEPR: errors='ignore' #55734
- DEPR: deprecate returning a tuple from a callable in iloc indexing #53769
- DEPR offsets: rename ‘Y’ to ‘YE' #55792
- DEPR: read_gbq, DataFrame.to_gbq #55868
- ENH: Improve error message when constructing period with invalid freq #55940
- DEPR: PeriodIndex ordinal, fields keywords #55963
- DEPR: groupby.fillna #55719
- DEPR: rename BQ to BQE for offsets #55978
- DEPR: is_period, is_interval #56038
- DEPR offsets: rename 'SM' to 'SME' #56050
- DEPR: Deprecate empty bool indexer for Index #56055
- DEPR: deprecate exposing blocks in core.internals #55139
- DEPR: fractional periods in date_range, timedelta_range, period_range… #56036
- DEPR offsets: rename ‘BY’ to ‘BYE' #56092
- DEPR: dtype inference in value_counts #56161 (closed by DEPR: value_counts doing dtype inference on result.index #58009)
- DEPR: Some Grouper and Grouping attributes #56149
- DEPR: Deprecate Series.view #56054
- DEPR: Deprecate ravel #56053
- DEPR: kind keyword in resample #55895
- DEPR: unit keyword in TimedeltaIndex #55856 (closed by DEPR: enforce deprecation of DTI/TDI unused keywords #58003)
- DEPR: Default of observed=False in DataFrame.pivot_table #56237
- Use DeprecationWarning instead of FutureWarning for is_.._dtype deprecations #55703
- DEPR: Index.insert dtype-inference #55257
- DEPR: Series[categorical].replace special-casing #56385
- DEPR: casting in datetimelike isin #56427
- DEPR: type argument in Index.view #56421 (closed by DEPR: passing pandas type to Index.view #58047)
- DEPR: Disallow dtype inference when setting Index into DataFrame #56102
- DEPR: raise ValueError if invalid period freq pass to asfreq #56489
- DEPR: resample with PeriodIndex #55968
- DEPR: groupby.grouper #56521
- DEPR: verbose kwd in read_csv, read_table #56556
- DEPR: Tick.delta #56558 (closed by DEPR: remove Tick.delta #58005)
- DEPR: keep_date_col, nested parse_dates in read_csv #56569
- DEPR: delim_whitespace kwd in read_csv #56557
- DEPR: DatetimeArray/TimedeltaArray.__init__ #56043 (closed by DEPR: remove DTA.__init__, TDA.__init__ #58004)
- DEPR: Deprecate dtype inference on pandas objects #56244
- DEPR: the method is_anchored() for offsets #56594
- DEPR: fillna method kwd #53496