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Pandas 1.0, Hacker News

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SparseSeries , SparseDataFrame and the DataFrame.to_sparse method have been removed ( GH ). We recommend using a Series or DataFrame with sparse values ​​instead. See Migrating for help with migrating existing code.

Previously, pandas would register converters with matplotlib as a side effect of importing pandas ( GH )). This changed the output of plots made via matplotlib plots after pandas was imported, even if you were using matplotlib directly rather than plot () .

Note that plots created by DataFrame.plot () and Series.plot () do register the converters automatically. The only behavior change is when plotting a date-like object via matplotlib.pyplot.plot or matplotlib.Axes.plot . See Custom formatters for timeseries plots for more.

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Removed the previously deprecated keyword “index” from

  • read_stata () , StataReader , and StataReader.read () , use “index_col” instead ( (GH) )

  • Removed StataReader.data method, use StataReader.read () (instead) (GH)

  • Removed pandas.plotting._matplotlib. tsplot , use Series.plot () instead ( (GH) )

  • pandas.tseries.converter.register has been moved to pandas.plotting.register_matplotlib_converters () ( GH

    Series.plot () no longer accepts positional arguments, pass keyword arguments instead ( GH )

  • DataFrame.hist ()

    • and Series.hist () no longer allows figsize="default" , specify figure size by passinig a tuple instead ( (GH)

  • Floordiv of integer-dtyped array by Timedelta

    • now raises TypeError ( GH

  • TimedeltaIndex and DatetimeIndex no longer accept non-nanosecond dtype strings like “timedelta 17739 ”or” datetime 18217 ”, use“ timedelta [ns] “and” datetime 17739 [ns] ”instead ( GH

  • Changed the default “skipna” argument in pandas.api.types.infer_dtype ()

    • False to True (( GH

  • Removed Series.ix and DataFrame.ix ( GH)

  • Removed Index.summary ( (GH)

  • Removed the previously deprecated keyword “fastpath” from the Index constructor ( (GH)

  • Removed Series.get_value , Series.set_value , DataFrame.get_value , DataFrame.set_value ( (GH)

  • Removed Series.compound and DataFrame.compound ( GH

  • Changed the default “inplace” argument in DataFrame.set_index ()

    • and Series.set_axis () (None)

    to False ( GH

  • Removed Series.cat.categorical , Series.cat.index , Series.cat.name ( (GH)

  • Removed the previously deprecated keyword “box” from to_datetime ()

    • and

    to_timedelta ()

    ; in addition these now always returns DatetimeIndex TimedeltaIndex , Index , Series , or DataFrame ( (GH) )

  • to_timedelta () ,

    Timedelta , and TimedeltaIndex no longer allow “M”, “Y”, or “Y” for the “unit” argument ( (GH)

  • Removed the previously deprecated keyword “time_rule” from (non-public) offsets.generate_range , which has been moved to core.arrays._ranges.generate_range () ( (GH)

  • DataFrame.loc ()

    • or

    Series.loc () with listlike indexers and missing labels will no longer reindex ( (GH)

  • DataFrame.to_excel ()

    and Series.to_excel () with non-existent columns will no longer reindex ( (GH)

  • Removed the previously deprecated keyword “join_axes” from () concat () ; use reindex_like on the result instead ( GH

  • Removed the previously deprecated keyword “by” from DataFrame.sort_index () , use DataFrame.sort_values ​​() instead ( (GH) )

  • Removed support for nested renaming in DataFrame.aggregate () , Series.aggregate () , core.groupby.DataFrameGroupBy.aggregate () , core.groupby.SeriesGroupBy.aggregate () , core.window.rolling .Rolling.aggregate () ( (GH)

  • Passing datetime

    data to TimedeltaIndex

    • or timedelta data to DatetimeIndex now raises TypeError ( (GH) (GH) )

  • Passing int

    .

    values ​​to DatetimeIndex and a timezone now interprets the values ​​as nanosecond timestamps in UTC, not wall times in the given timezone ( GH )

  • A tuple passed to DataFrame.groupby () is now exclusively treated as a single key ( (GH)

  • Removed Index.contains , use key (in index instead ( (GH)

  • Addition and subtraction of int or integer-arrays is no longer allowed in Timestamp , , DatetimeIndex ,

    TimedeltaIndex

    , use obj n obj.freq instead of obj n (( (GH)

  • Removed Series.ptp ( (GH) )

  • Removed Series.from_array ( (GH) )

  • Removed DataFrame.from_items ( (GH) )

  • Removed DataFrame.as_matrix , Series.as_matrix ( (GH)

  • Removed Series.asobject ( GH

    • )

  • Removed DataFrame.as_blocks , Series.as_blocks , DataFrame.blocks , Series.blocks ( (GH) )

  • pandas.Series.str.cat ()

    now defaults to aligning others , using join='left' ( (GH) )

  • pandas.Series.str.cat ()

    does not accept list-likes within (list-likes anymore) (GH)

  • Series.where () with Categorical (dtype) or DataFrame.where () with Categorical column) no longer allows setting new categories ( (GH)

  • Removed the previously deprecated keywords “start”, “end”, and “periods” from the DatetimeIndex

    • , TimedeltaIndex ) , and PeriodIndex constructors; use date_range () , timedelta_range ()

    , and

    (period_range () instead ( (GH)

  • Removed the previously deprecated keyword “verify_integrity” from the DatetimeIndex

    • and TimedeltaIndex constructors ( GH )

  • Removed the previously deprecated keyword “fastpath” from pandas.core.internals.blocks.make_block ( (GH) )

  • Removed the previously deprecated keyword “dtype” from Block.make_block_same_class () (

  • (GH) )

  • Removed ExtensionArray._formatting_values ​​ . Use ExtensionArray._formatter instead. ( (GH) )

  • Removed MultiIndex.to_hierarchical ( (GH)

  • Removed MultiIndex.labels , use MultiIndex.codes

    • instead ( (GH)

  • Removed the previously deprecated keyword “labels” from the

    MultiIndex

    constructor, use “codes” instead ( (GH)

  • Removed MultiIndex.set_labels , use MultiIndex.set_codes () instead ( (GH)

  • Removed the previously deprecated keyword “labels” from

    MultiIndex.set_codes ()

    , MultiIndex.copy () , MultiIndex.drop () , use “codes” instead ( (GH)

  • Removed support for legacy HDF5 formats ( (GH) )

  • Passing a dtype alias (eg 'datetime [ns, UTC] ') to DatetimeTZDtype

    • is no longer allowed, use DatetimeTZDtype.construct_from_string () instead ( GH 24751 )

  • Removed the previously deprecated keyword “skip_footer” from read_excel () ; use “skipfooter” instead ( (GH) )

  • read_excel ()

    • no longer allows an integer value for the parameter usecols , instead pass a list of integers from 0 to (usecols inclusive (GH)

  • Removed the previously deprecated keyword “convert_datetime 17739 ”from DataFrame.to_records () ( (GH) )

  • Removed IntervalIndex.from_intervals in favor of the IntervalIndex

    • constructor ( (GH)

  • Changed the default “keep_tz” argument in DatetimeIndex.to_series ()

    • from None (True) ( (GH)

  • Removed api.types.is_period and api.types.is_datetimetz ( (GH)

  • Ability to read pickles containing Categorical instances created with pre- 0. 17328 version of pandas has been removed ( (GH) () )

  • Removed pandas.tseries.plotting. tsplot ( (GH)

  • Removed the previously deprecated keywords “reduce” and “broadcast” from DataFrame.apply () ( (GH)

  • Removed the previously deprecated assert_raises_regex function in pandas._testing

    • ( (GH) )

  • Removed the previously deprecated FrozenNDArray class in pandas.core.indexes.frozen ( (GH)

    • )

  • Removed the previously deprecated keyword “nthreads” from read_feather () , use “use_threads” instead ( (GH) )

  • Removed Index.is_lexsorted_for_tuple ( (GH)

    • )

  • Removed support for nested renaming in DataFrame.aggregate () , Series.aggregate () , core.groupby.DataFrameGroupBy.aggregate () , core.groupby.SeriesGroupBy.aggregate () , core.window.rolling .Rolling.aggregate () ( (GH)

  • Removed Series.valid ; use Series.dropna ()

    • instead ( (GH) ))

  • Removed DataFrame.is_copy , Series.is_copy ( (GH)

  • Removed DataFrame.get_ftype_counts , Series.get_ftype_counts ( (GH)

  • Removed DataFrame.ftypes , Series.ftypes , Series.ftype ( (GH)

    • )

  • Removed Index.get_duplicates , use idx [idx.duplicated()]. unique () instead ( (GH)

  • Removed Series.clip_upper , Series.clip_lower , DataFrame.clip_upper ,

    • DataFrame.clip_lower ( (GH) )

  • Removed the ability to alter DatetimeIndex.freq , TimedeltaIndex.freq , or PeriodIndex.freq ( (GH) )

  • Removed DatetimeIndex.offset ( GH

  • Removed DatetimeIndex.asobject , TimedeltaIndex.asobject , PeriodIndex.asobject , use astype (object) instead ( (GH)

  • Removed the previously deprecated keyword “order” from factorize ()

    • (GH) )

  • Removed the previously deprecated keyword “encoding” from read_stata () and DataFrame.to_stata () (( (GH) )

  • Changed the default “sort” argument in concat () ( None False ( (GH) )

  • Removed the previously deprecated keyword “raise_conflict” from DataFrame.update () , use “errors” instead (

    • (GH) )

  • Removed the previously deprecated keyword “n” from DatetimeIndex.shift ()

    • , TimedeltaIndex.shift () , PeriodIndex.shift () , use “periods” instead ( (GH)

  • Removed the previously deprecated keywords “how”, “fill_method”, and “limit” from DataFrame.resample () (

    • (GH)

    )

  • Passing an integer to Series.fillna () or DataFrame.fillna () with timedelta 17739 [ns] dtype now raises TypeError ( (GH)

    Passing multiple axes to DataFrame.dropna () (is no longer supported) (GH)

  • Removed Series.nonzero , use to_numpy (). nonzero () (instead) (GH)

    • )

  • Passing floating dtype codes to Categorical.from_codes () is no longer supported, pass codes.astype (np.int 17656) instead ( (GH) )

  • Removed the previously deprecated keyword “pat” from Series.str.partition ()

    • and Series.str.rpartition () , use “sep” instead ( (GH)

  • Removed Series.put ( (GH) )

  • Removed Series.real , Series.imag ( (GH) )

  • Removed Series.to_dense , DataFrame.to_dense ( (GH) )

  • Removed Index.dtype_str , use str (index.dtype) (instead) (GH) )

  • Categorical.ravel () returns a Categorical instead of a ndarray ( (GH) () )

  • The ‘outer’ method on Numpy ufuncs, e.g. np.subtract.outer operating on Series objects is no longer supported, and will raise NotImplementedError ( (GH)

  • Removed Series.get_dtype_counts and DataFrame.get_dtype_counts ( (GH) )

  • Changed the default “fill_value” argument in Categorical.take () from True ) to False ( (GH)

  • Changed the default value for the raw argument in Series.rolling (). apply () , DataFrame.rolling (). Apply () , Series.expanding (). Apply () , and DataFrame.expanding (). apply () from None False ( (GH)

    • ))

  • Removed deprecated behavior of Series.argmin () ) and Series () , use Series.idxmin () and Series.idxmax () fo r the old behavior ( (GH)

  • Passing a tz-aware datetime. datetime or Timestamp

    • into the Timestamp constructor with the tz argument now raises a ValueError ( (GH)

  • Removed Series.base , Index.base , Categorical.base ,

    • Series.flags , Index.flags , PeriodArray.flags , Series.strides , Index.strides , Series. itemsize , Index.itemsize , Series.data , Index.data ( (GH)

  • Changed Timedelta.resolution () to match the behavior of the standard library datetime.timedelta.resolution , for the old behavior, use Timedelta.resolution_string () ( (GH)

  • Removed Timestamp.weekday_name , DatetimeIndex.weekday_name , and Series.dt.weekday_name ( (GH)

  • Removed the previously deprecated keyword “errors” in Timestamp.tz_localize ()

    , DatetimeIndex.tz_localize ()

    , and series.tz_localize () (

    (GH)

  • Changed the default “ordered” argument in CategoricalDtype from None to False ( (GH)

  • Series.set_axis ()

    and DataFrame.set_axis () ) now require “labels” as the first argument and “axis” as an optional named parameter ( (GH)

  • Removed to_msgpack

    .

    , read_msgpack , DataFrame.to_msgpack , Series.to_msgpack (

  • (GH)

    • )

  • Removed Series.compress ( (GH)

  • Removed the previously deprecated keyword “fill_value” from Categorical.fillna ()

    • , use “value” instead ( (GH) )

  • Removed the previously deprecated keyword “data” from andrews_curves ()

    • , use “frame” instead ( (GH)

  • Removed the previously deprecated keyword “data” from parallel_coordinates ()

    • , use “frame” instead ( (GH)

  • Removed the previously deprecated keyword “colors” from parallel_coordinates () , use “color” instead ( (GH)

  • Removed the previously deprecated keywords “verbose” and “private_key” from read_gbq ()

    • (GH)

  • Calling np.array and np.asarray on tz-aware Series

    and DatetimeIndex will now return an object array of tz- aware Timestamp

    • (

    (GH)

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