diff --git a/doc/source/whatsnew/v2.0.0.rst b/doc/source/whatsnew/v2.0.0.rst
index 30acc117c237a..aa956e5441c2d 100644
--- a/doc/source/whatsnew/v2.0.0.rst
+++ b/doc/source/whatsnew/v2.0.0.rst
@@ -145,6 +145,7 @@ Deprecations
Removal of prior version deprecations/changes
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- Remove arguments ``names`` and ``dtype`` from :meth:`Index.copy` and ``levels`` and ``codes`` from :meth:`MultiIndex.copy` (:issue:`35853`, :issue:`36685`)
+- Removed argument ``try_cast`` from :meth:`DataFrame.mask`, :meth:`DataFrame.where`, :meth:`Series.mask` and :meth:`Series.where` (:issue:`38836`)
- Disallow passing non-round floats to :class:`Timestamp` with ``unit="M"`` or ``unit="Y"`` (:issue:`47266`)
- Removed :func:`is_extension_type` in favor of :func:`is_extension_array_dtype` (:issue:`29457`)
- Remove :meth:`DataFrameGroupBy.pad` and :meth:`DataFrameGroupBy.backfill` (:issue:`45076`)
diff --git a/pandas/core/frame.py b/pandas/core/frame.py
index 6f0f92ac03b3f..396a794d26c64 100644
--- a/pandas/core/frame.py
+++ b/pandas/core/frame.py
@@ -11892,7 +11892,6 @@ def where(
axis: Axis | None = ...,
level: Level = ...,
errors: IgnoreRaise | lib.NoDefault = ...,
- try_cast: bool | lib.NoDefault = ...,
) -> DataFrame:
...
@@ -11906,7 +11905,6 @@ def where(
axis: Axis | None = ...,
level: Level = ...,
errors: IgnoreRaise | lib.NoDefault = ...,
- try_cast: bool | lib.NoDefault = ...,
) -> None:
...
@@ -11920,7 +11918,6 @@ def where(
axis: Axis | None = ...,
level: Level = ...,
errors: IgnoreRaise | lib.NoDefault = ...,
- try_cast: bool | lib.NoDefault = ...,
) -> DataFrame | None:
...
@@ -11937,7 +11934,6 @@ def where( # type: ignore[override]
axis: Axis | None = None,
level: Level = None,
errors: IgnoreRaise | lib.NoDefault = "raise",
- try_cast: bool | lib.NoDefault = lib.no_default,
) -> DataFrame | None:
return super().where(
cond,
@@ -11945,7 +11941,6 @@ def where( # type: ignore[override]
inplace=inplace,
axis=axis,
level=level,
- try_cast=try_cast,
)
@overload
@@ -11958,7 +11953,6 @@ def mask(
axis: Axis | None = ...,
level: Level = ...,
errors: IgnoreRaise | lib.NoDefault = ...,
- try_cast: bool | lib.NoDefault = ...,
) -> DataFrame:
...
@@ -11972,7 +11966,6 @@ def mask(
axis: Axis | None = ...,
level: Level = ...,
errors: IgnoreRaise | lib.NoDefault = ...,
- try_cast: bool | lib.NoDefault = ...,
) -> None:
...
@@ -11986,7 +11979,6 @@ def mask(
axis: Axis | None = ...,
level: Level = ...,
errors: IgnoreRaise | lib.NoDefault = ...,
- try_cast: bool | lib.NoDefault = ...,
) -> DataFrame | None:
...
@@ -12003,7 +11995,6 @@ def mask( # type: ignore[override]
axis: Axis | None = None,
level: Level = None,
errors: IgnoreRaise | lib.NoDefault = "raise",
- try_cast: bool | lib.NoDefault = lib.no_default,
) -> DataFrame | None:
return super().mask(
cond,
@@ -12011,7 +12002,6 @@ def mask( # type: ignore[override]
inplace=inplace,
axis=axis,
level=level,
- try_cast=try_cast,
)
diff --git a/pandas/core/generic.py b/pandas/core/generic.py
index 4f3c908817ac7..6403e653f5325 100644
--- a/pandas/core/generic.py
+++ b/pandas/core/generic.py
@@ -9806,7 +9806,6 @@ def where(
axis: Axis | None = ...,
level: Level = ...,
errors: IgnoreRaise | lib.NoDefault = ...,
- try_cast: bool_t | lib.NoDefault = ...,
) -> NDFrameT:
...
@@ -9820,7 +9819,6 @@ def where(
axis: Axis | None = ...,
level: Level = ...,
errors: IgnoreRaise | lib.NoDefault = ...,
- try_cast: bool_t | lib.NoDefault = ...,
) -> None:
...
@@ -9834,7 +9832,6 @@ def where(
axis: Axis | None = ...,
level: Level = ...,
errors: IgnoreRaise | lib.NoDefault = ...,
- try_cast: bool_t | lib.NoDefault = ...,
) -> NDFrameT | None:
...
@@ -9857,7 +9854,6 @@ def where(
axis: Axis | None = None,
level: Level = None,
errors: IgnoreRaise | lib.NoDefault = "raise",
- try_cast: bool_t | lib.NoDefault = lib.no_default,
) -> NDFrameT | None:
"""
Replace values where the condition is {cond_rev}.
@@ -9896,12 +9892,6 @@ def where(
.. deprecated:: 1.5.0
This argument had no effect.
- try_cast : bool, default None
- Try to cast the result back to the input type (if possible).
-
- .. deprecated:: 1.3.0
- Manually cast back if necessary.
-
Returns
-------
Same type as caller or None if ``inplace=True``.
@@ -10012,15 +10002,6 @@ def where(
4 True True
"""
other = com.apply_if_callable(other, self)
-
- if try_cast is not lib.no_default:
- warnings.warn(
- "try_cast keyword is deprecated and will be removed in a "
- "future version.",
- FutureWarning,
- stacklevel=find_stack_level(),
- )
-
return self._where(cond, other, inplace, axis, level)
@overload
@@ -10033,7 +10014,6 @@ def mask(
axis: Axis | None = ...,
level: Level = ...,
errors: IgnoreRaise | lib.NoDefault = ...,
- try_cast: bool_t | lib.NoDefault = ...,
) -> NDFrameT:
...
@@ -10047,7 +10027,6 @@ def mask(
axis: Axis | None = ...,
level: Level = ...,
errors: IgnoreRaise | lib.NoDefault = ...,
- try_cast: bool_t | lib.NoDefault = ...,
) -> None:
...
@@ -10061,7 +10040,6 @@ def mask(
axis: Axis | None = ...,
level: Level = ...,
errors: IgnoreRaise | lib.NoDefault = ...,
- try_cast: bool_t | lib.NoDefault = ...,
) -> NDFrameT | None:
...
@@ -10085,20 +10063,11 @@ def mask(
axis: Axis | None = None,
level: Level = None,
errors: IgnoreRaise | lib.NoDefault = "raise",
- try_cast: bool_t | lib.NoDefault = lib.no_default,
) -> NDFrameT | None:
inplace = validate_bool_kwarg(inplace, "inplace")
cond = com.apply_if_callable(cond, self)
- if try_cast is not lib.no_default:
- warnings.warn(
- "try_cast keyword is deprecated and will be removed in a "
- "future version.",
- FutureWarning,
- stacklevel=find_stack_level(),
- )
-
# see gh-21891
if not hasattr(cond, "__invert__"):
cond = np.array(cond)
diff --git a/pandas/core/series.py b/pandas/core/series.py
index 6620cc1786340..98fc797806d11 100644
--- a/pandas/core/series.py
+++ b/pandas/core/series.py
@@ -6066,7 +6066,6 @@ def where(
axis: Axis | None = ...,
level: Level = ...,
errors: IgnoreRaise | lib.NoDefault = ...,
- try_cast: bool | lib.NoDefault = ...,
) -> Series:
...
@@ -6080,7 +6079,6 @@ def where(
axis: Axis | None = ...,
level: Level = ...,
errors: IgnoreRaise | lib.NoDefault = ...,
- try_cast: bool | lib.NoDefault = ...,
) -> None:
...
@@ -6094,7 +6092,6 @@ def where(
axis: Axis | None = ...,
level: Level = ...,
errors: IgnoreRaise | lib.NoDefault = ...,
- try_cast: bool | lib.NoDefault = ...,
) -> Series | None:
...
@@ -6111,7 +6108,6 @@ def where( # type: ignore[override]
axis: Axis | None = None,
level: Level = None,
errors: IgnoreRaise | lib.NoDefault = lib.no_default,
- try_cast: bool | lib.NoDefault = lib.no_default,
) -> Series | None:
return super().where(
cond,
@@ -6119,7 +6115,6 @@ def where( # type: ignore[override]
inplace=inplace,
axis=axis,
level=level,
- try_cast=try_cast,
)
@overload
@@ -6132,7 +6127,6 @@ def mask(
axis: Axis | None = ...,
level: Level = ...,
errors: IgnoreRaise | lib.NoDefault = ...,
- try_cast: bool | lib.NoDefault = ...,
) -> Series:
...
@@ -6146,7 +6140,6 @@ def mask(
axis: Axis | None = ...,
level: Level = ...,
errors: IgnoreRaise | lib.NoDefault = ...,
- try_cast: bool | lib.NoDefault = ...,
) -> None:
...
@@ -6160,7 +6153,6 @@ def mask(
axis: Axis | None = ...,
level: Level = ...,
errors: IgnoreRaise | lib.NoDefault = ...,
- try_cast: bool | lib.NoDefault = ...,
) -> Series | None:
...
@@ -6177,7 +6169,6 @@ def mask( # type: ignore[override]
axis: Axis | None = None,
level: Level = None,
errors: IgnoreRaise | lib.NoDefault = lib.no_default,
- try_cast: bool | lib.NoDefault = lib.no_default,
) -> Series | None:
return super().mask(
cond,
@@ -6185,7 +6176,6 @@ def mask( # type: ignore[override]
inplace=inplace,
axis=axis,
level=level,
- try_cast=try_cast,
)
# ----------------------------------------------------------------------
diff --git a/pandas/tests/frame/indexing/test_mask.py b/pandas/tests/frame/indexing/test_mask.py
index bd7ffe9a8e770..3a31123da7679 100644
--- a/pandas/tests/frame/indexing/test_mask.py
+++ b/pandas/tests/frame/indexing/test_mask.py
@@ -110,19 +110,6 @@ def test_mask_pos_args_deprecation(self, frame_or_series):
tm.assert_equal(result, expected)
-def test_mask_try_cast_deprecated(frame_or_series):
-
- obj = DataFrame(np.random.randn(4, 3))
- if frame_or_series is not DataFrame:
- obj = obj[0]
-
- mask = obj > 0
-
- with tm.assert_produces_warning(FutureWarning):
- # try_cast keyword deprecated
- obj.mask(mask, -1, try_cast=True)
-
-
def test_mask_stringdtype(frame_or_series):
# GH 40824
obj = DataFrame(
diff --git a/pandas/tests/frame/indexing/test_where.py b/pandas/tests/frame/indexing/test_where.py
index fba8978d2128c..ea559230d1595 100644
--- a/pandas/tests/frame/indexing/test_where.py
+++ b/pandas/tests/frame/indexing/test_where.py
@@ -764,17 +764,6 @@ def test_where_datetimelike_noop(self, dtype):
tm.assert_frame_equal(df, expected.astype(object))
-def test_where_try_cast_deprecated(frame_or_series):
- obj = DataFrame(np.random.randn(4, 3))
- obj = tm.get_obj(obj, frame_or_series)
-
- mask = obj > 0
-
- with tm.assert_produces_warning(FutureWarning):
- # try_cast keyword deprecated
- obj.where(mask, -1, try_cast=False)
-
-
def test_where_int_downcasting_deprecated():
# GH#44597
arr = np.arange(6).astype(np.int16).reshape(3, 2)