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Remove DataFrame.applymap and Styler.applymap (#57345)
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+5
-154
lines changed

10 files changed

+5
-154
lines changed

‎doc/redirects.csv

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@@ -311,7 +311,6 @@ generated/pandas.DataFrame.align,../reference/api/pandas.DataFrame.align
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generated/pandas.DataFrame.all,../reference/api/pandas.DataFrame.all
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generated/pandas.DataFrame.any,../reference/api/pandas.DataFrame.any
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generated/pandas.DataFrame.apply,../reference/api/pandas.DataFrame.apply
314-
generated/pandas.DataFrame.applymap,../reference/api/pandas.DataFrame.applymap
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generated/pandas.DataFrame.as_blocks,../reference/api/pandas.DataFrame.as_blocks
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generated/pandas.DataFrame.asfreq,../reference/api/pandas.DataFrame.asfreq
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generated/pandas.DataFrame.as_matrix,../reference/api/pandas.DataFrame.as_matrix
@@ -747,8 +746,6 @@ generated/pandas.Interval.overlaps,../reference/api/pandas.Interval.overlaps
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generated/pandas.interval_range,../reference/api/pandas.interval_range
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generated/pandas.Interval.right,../reference/api/pandas.Interval.right
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generated/pandas.io.formats.style.Styler.apply,../reference/api/pandas.io.formats.style.Styler.apply
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generated/pandas.io.formats.style.Styler.applymap,../reference/api/pandas.io.formats.style.Styler.map
751-
generated/pandas.io.formats.style.Styler.applymap_index,../reference/api/pandas.io.formats.style.Styler.map_index
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generated/pandas.io.formats.style.Styler.background_gradient,../reference/api/pandas.io.formats.style.Styler.background_gradient
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generated/pandas.io.formats.style.Styler.bar,../reference/api/pandas.io.formats.style.Styler.bar
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generated/pandas.io.formats.style.Styler.clear,../reference/api/pandas.io.formats.style.Styler.clear
@@ -1432,8 +1429,6 @@ reference/api/pandas.arrays.PandasArray,pandas.arrays.NumpyExtensionArray
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reference/api/pandas.core.groupby.DataFrameGroupBy.backfill,pandas.core.groupby.DataFrameGroupBy.bfill
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reference/api/pandas.core.groupby.GroupBy.backfill,pandas.core.groupby.DataFrameGroupBy.bfill
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reference/api/pandas.core.resample.Resampler.backfill,pandas.core.resample.Resampler.bfill
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reference/api/pandas.io.formats.style.Styler.applymap,pandas.io.formats.style.Styler.map
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reference/api/pandas.io.formats.style.Styler.applymap_index,pandas.io.formats.style.Styler.map_index
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# EWM -> ExponentialMovingWindow
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reference/api/pandas.core.window.ewm.EWM.corr,pandas.core.window.ewm.ExponentialMovingWindow.corr

‎doc/source/reference/frame.rst

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@@ -117,7 +117,6 @@ Function application, GroupBy & window
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DataFrame.apply
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DataFrame.map
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DataFrame.applymap
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DataFrame.pipe
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DataFrame.agg
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DataFrame.aggregate

‎doc/source/user_guide/10min.rst

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@@ -91,8 +91,8 @@ will be completed:
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df2.any df2.combine
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df2.append df2.D
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df2.apply df2.describe
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df2.applymap df2.diff
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df2.B df2.duplicated
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df2.diff
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As you can see, the columns ``A``, ``B``, ``C``, and ``D`` are automatically
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tab completed. ``E`` and ``F`` are there as well; the rest of the attributes have been

‎doc/source/whatsnew/v0.20.0.rst

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@@ -369,7 +369,6 @@ Experimental support has been added to export ``DataFrame.style`` formats to Exc
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For example, after running the following, ``styled.xlsx`` renders as below:
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.. ipython:: python
372-
:okwarning:
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np.random.seed(24)
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df = pd.DataFrame({'A': np.linspace(1, 10, 10)})
@@ -379,7 +378,7 @@ For example, after running the following, ``styled.xlsx`` renders as below:
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df.iloc[0, 2] = np.nan
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df
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styled = (df.style
382-
.applymap(lambda val: 'color:red;' if val < 0 else 'color:black;')
381+
.map(lambda val: 'color:red;' if val < 0 else 'color:black;')
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.highlight_max())
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styled.to_excel('styled.xlsx', engine='openpyxl')
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‎doc/source/whatsnew/v3.0.0.rst

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@@ -106,6 +106,7 @@ Removal of prior version deprecations/changes
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- :func:`read_excel`, :func:`read_json`, :func:`read_html`, and :func:`read_xml` no longer accept raw string or byte representation of the data. That type of data must be wrapped in a :py:class:`StringIO` or :py:class:`BytesIO` (:issue:`53767`)
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- All arguments except the first ``path``-like argument in IO writers are now keyword only (:issue:`54229`)
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- Changed the default value of ``observed`` in :meth:`DataFrame.groupby` and :meth:`Series.groupby` to ``True`` (:issue:`51811`)
109+
- Removed :meth:`DataFrame.applymap`, :meth:`Styler.applymap` and :meth:`Styler.applymap_index` (:issue:`52364`)
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- Removed ``DataFrame.bool`` and ``Series.bool`` (:issue:`51756`)
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- Removed ``DataFrame.first`` and ``DataFrame.last`` (:issue:`53710`)
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- Removed ``DataFrameGroupBy.grouper`` and ``SeriesGroupBy.grouper`` (:issue:`56521`)

‎pandas/core/frame.py

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@@ -227,7 +227,6 @@
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MergeHow,
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MergeValidate,
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MutableMappingT,
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NaAction,
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NaPosition,
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NsmallestNlargestKeep,
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PythonFuncType,
@@ -10150,60 +10149,6 @@ def infer(x):
1015010149

1015110150
return self.apply(infer).__finalize__(self, "map")
1015210151

10153-
def applymap(
10154-
self, func: PythonFuncType, na_action: NaAction | None = None, **kwargs
10155-
) -> DataFrame:
10156-
"""
10157-
Apply a function to a Dataframe elementwise.
10158-
10159-
.. deprecated:: 2.1.0
10160-
10161-
DataFrame.applymap has been deprecated. Use DataFrame.map instead.
10162-
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This method applies a function that accepts and returns a scalar
10164-
to every element of a DataFrame.
10165-
10166-
Parameters
10167-
----------
10168-
func : callable
10169-
Python function, returns a single value from a single value.
10170-
na_action : {None, 'ignore'}, default None
10171-
If 'ignore', propagate NaN values, without passing them to func.
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**kwargs
10173-
Additional keyword arguments to pass as keywords arguments to
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`func`.
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Returns
10177-
-------
10178-
DataFrame
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Transformed DataFrame.
10180-
10181-
See Also
10182-
--------
10183-
DataFrame.apply : Apply a function along input axis of DataFrame.
10184-
DataFrame.map : Apply a function along input axis of DataFrame.
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DataFrame.replace: Replace values given in `to_replace` with `value`.
10186-
10187-
Examples
10188-
--------
10189-
>>> df = pd.DataFrame([[1, 2.12], [3.356, 4.567]])
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>>> df
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0 1
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0 1.000 2.120
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1 3.356 4.567
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>>> df.map(lambda x: len(str(x)))
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0 1
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0 3 4
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1 5 5
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"""
10200-
warnings.warn(
10201-
"DataFrame.applymap has been deprecated. Use DataFrame.map instead.",
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FutureWarning,
10203-
stacklevel=find_stack_level(),
10204-
)
10205-
return self.map(func, na_action=na_action, **kwargs)
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# ----------------------------------------------------------------------
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# Merging / joining methods
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‎pandas/errors/__init__.py

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@@ -549,11 +549,11 @@ class CSSWarning(UserWarning):
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Examples
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--------
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>>> df = pd.DataFrame({"A": [1, 1, 1]})
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>>> df.style.applymap(lambda x: "background-color: blueGreenRed;").to_excel(
552+
>>> df.style.map(lambda x: "background-color: blueGreenRed;").to_excel(
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... "styled.xlsx"
554554
... ) # doctest: +SKIP
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CSSWarning: Unhandled color format: 'blueGreenRed'
556-
>>> df.style.applymap(lambda x: "border: 1px solid red red;").to_excel(
556+
>>> df.style.map(lambda x: "border: 1px solid red red;").to_excel(
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... "styled.xlsx"
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... ) # doctest: +SKIP
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CSSWarning: Unhandled color format: 'blueGreenRed'

‎pandas/io/formats/style.py

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@@ -12,7 +12,6 @@
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Callable,
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overload,
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)
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import warnings
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import numpy as np
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@@ -23,7 +22,6 @@
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Substitution,
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doc,
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)
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from pandas.util._exceptions import find_stack_level
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import pandas as pd
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from pandas import (
@@ -2011,42 +2009,6 @@ def map_index(
20112009
)
20122010
return self
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2014-
def applymap_index(
2015-
self,
2016-
func: Callable,
2017-
axis: AxisInt | str = 0,
2018-
level: Level | list[Level] | None = None,
2019-
**kwargs,
2020-
) -> Styler:
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"""
2022-
Apply a CSS-styling function to the index or column headers, elementwise.
2023-
2024-
.. deprecated:: 2.1.0
2025-
2026-
Styler.applymap_index has been deprecated. Use Styler.map_index instead.
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2028-
Parameters
2029-
----------
2030-
func : function
2031-
``func`` should take a scalar and return a string.
2032-
axis : {{0, 1, "index", "columns"}}
2033-
The headers over which to apply the function.
2034-
level : int, str, list, optional
2035-
If index is MultiIndex the level(s) over which to apply the function.
2036-
**kwargs : dict
2037-
Pass along to ``func``.
2038-
2039-
Returns
2040-
-------
2041-
Styler
2042-
"""
2043-
warnings.warn(
2044-
"Styler.applymap_index has been deprecated. Use Styler.map_index instead.",
2045-
FutureWarning,
2046-
stacklevel=find_stack_level(),
2047-
)
2048-
return self.map_index(func, axis, level, **kwargs)
2049-
20502012
def _map(self, func: Callable, subset: Subset | None = None, **kwargs) -> Styler:
20512013
func = partial(func, **kwargs) # map doesn't take kwargs?
20522014
if subset is None:
@@ -2117,36 +2079,6 @@ def map(self, func: Callable, subset: Subset | None = None, **kwargs) -> Styler:
21172079
)
21182080
return self
21192081

2120-
@Substitution(subset=subset_args)
2121-
def applymap(
2122-
self, func: Callable, subset: Subset | None = None, **kwargs
2123-
) -> Styler:
2124-
"""
2125-
Apply a CSS-styling function elementwise.
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2127-
.. deprecated:: 2.1.0
2128-
2129-
Styler.applymap has been deprecated. Use Styler.map instead.
2130-
2131-
Parameters
2132-
----------
2133-
func : function
2134-
``func`` should take a scalar and return a string.
2135-
%(subset)s
2136-
**kwargs : dict
2137-
Pass along to ``func``.
2138-
2139-
Returns
2140-
-------
2141-
Styler
2142-
"""
2143-
warnings.warn(
2144-
"Styler.applymap has been deprecated. Use Styler.map instead.",
2145-
FutureWarning,
2146-
stacklevel=find_stack_level(),
2147-
)
2148-
return self.map(func, subset, **kwargs)
2149-
21502082
def set_table_attributes(self, attributes: str) -> Styler:
21512083
"""
21522084
Set the table attributes added to the ``<table>`` HTML element.

‎pandas/tests/frame/methods/test_map.py

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@@ -205,11 +205,3 @@ def test_map_invalid_na_action(float_frame):
205205
# GH 23803
206206
with pytest.raises(ValueError, match="na_action must be .*Got 'abc'"):
207207
float_frame.map(lambda x: len(str(x)), na_action="abc")
208-
209-
210-
def test_applymap_deprecated():
211-
# GH52353
212-
df = DataFrame({"a": [1, 2, 3]})
213-
msg = "DataFrame.applymap has been deprecated. Use DataFrame.map instead."
214-
with tm.assert_produces_warning(FutureWarning, match=msg):
215-
df.applymap(lambda x: x)

‎pandas/tests/io/formats/style/test_style.py

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@@ -1586,15 +1586,3 @@ def test_output_buffer(mi_styler, format):
15861586
# gh 47053
15871587
with tm.ensure_clean(f"delete_me.{format}") as f:
15881588
getattr(mi_styler, f"to_{format}")(f)
1589-
1590-
1591-
def test_deprecation_warning_for_usage_of_aaply_map_index_method_of_styler_object():
1592-
# 56717 https://github.com/pandas-dev/pandas/issues/56717
1593-
df = DataFrame([[1, 2], [3, 4]], index=["A", "B"])
1594-
msg = "Styler.applymap_index has been deprecated. Use Styler.map_index instead."
1595-
1596-
def color_b(s):
1597-
return "background-color:yellow;"
1598-
1599-
with tm.assert_produces_warning(FutureWarning, match=msg):
1600-
df.style.applymap_index(color_b, axis="columns")

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