May 18, 2025 · May 20, 2025
diff --git a/doc/api/next_api_changes/removals/30067-OG.rst b/doc/api/next_api_changes/removals/30067-OG.rst
 ``TransformNode.is_bbox``
 ^^^^^^^^^^^^^^^^^^^^^^^^^

 ... is removed. Instead check the object using ``isinstance(..., BboxBase)``.

 ``rcsetup.interactive_bk``, ``rcsetup.non_interactive_bk`` and ``rcsetup.all_backends``
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

 ... are removed and replaced by ``matplotlib.backends.backend_registry.list_builtin``
 with the following arguments

 - ``matplotlib.backends.BackendFilter.INTERACTIVE``
 - ``matplotlib.backends.BackendFilter.NON_INTERACTIVE``
 - ``None``

 ``BboxTransformToMaxOnly``
 ^^^^^^^^^^^^^^^^^^^^^^^^^^

 ... is removed. If you rely on this, please make a copy of old the code.

 *interval* parameter of ``TimerBase.start``
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 The timer interval parameter can no longer be set while starting it. The interval can be specified instead in the timer constructor, or by setting the timer.interval attribute.
diff --git a/lib/matplotlib/backend_bases.py b/lib/matplotlib/backend_bases.py
        """Need to stop timer and possibly disconnect timer."""
        self._timer_stop()

    @_api.delete_parameter("3.9", "interval", alternative="timer.interval")
    def start(self, interval=None):
        """
        Start the timer object.

        Parameters
        ----------
        interval : int, optional
            Timer interval in milliseconds; overrides a previously set interval
            if provided.
        """
        if interval is not None:
            self.interval = interval
    def start(self):
        """Start the timer."""
        self._timer_start()

    def stop(self):
diff --git a/lib/matplotlib/backend_bases.pyi b/lib/matplotlib/backend_bases.pyi
        callbacks: list[tuple[Callable, tuple, dict[str, Any]]] | None = ...,
    ) -> None: ...
    def __del__(self) -> None: ...
    def start(self, interval: int | None = ...) -> None: ...
    def start(self) -> None: ...
    def stop(self) -> None: ...
    @property
    def interval(self) -> int: ...
diff --git a/lib/matplotlib/rcsetup.py b/lib/matplotlib/rcsetup.py

 import matplotlib as mpl
 from matplotlib import _api, cbook
 from matplotlib.backends importBackendFilter,backend_registry
 from matplotlib.backends import backend_registry
 from matplotlib.cbook import ls_mapper
 from matplotlib.colors import Colormap, is_color_like
 from matplotlib._fontconfig_pattern import parse_fontconfig_pattern
 from cycler import Cycler, cycler as ccycler


 @_api.caching_module_getattr
 class __getattr__:
    @_api.deprecated(
        "3.9",
        alternative="``matplotlib.backends.backend_registry.list_builtin"
            "(matplotlib.backends.BackendFilter.INTERACTIVE)``")
    @property
    def interactive_bk(self):
        return backend_registry.list_builtin(BackendFilter.INTERACTIVE)

    @_api.deprecated(
        "3.9",
        alternative="``matplotlib.backends.backend_registry.list_builtin"
            "(matplotlib.backends.BackendFilter.NON_INTERACTIVE)``")
    @property
    def non_interactive_bk(self):
        return backend_registry.list_builtin(BackendFilter.NON_INTERACTIVE)

    @_api.deprecated(
        "3.9",
        alternative="``matplotlib.backends.backend_registry.list_builtin()``")
    @property
    def all_backends(self):
        return backend_registry.list_builtin()


 class ValidateInStrings:
    def __init__(self, key, valid, ignorecase=False, *,
                 _deprecated_since=None):
diff --git a/lib/matplotlib/rcsetup.pyi b/lib/matplotlib/rcsetup.pyi
 from typing import Any, Literal, TypeVar
 from matplotlib.typing import ColorType, LineStyleType, MarkEveryType

 interactive_bk: list[str]
 non_interactive_bk: list[str]
 all_backends: list[str]

 _T = TypeVar("_T")

diff --git a/lib/matplotlib/tests/test_backend_registry.py b/lib/matplotlib/tests/test_backend_registry.py

 import pytest

 import matplotlib as mpl
 from matplotlib.backends import BackendFilter, backend_registry


    assert backend_registry._backend_module_name(backend) == normalized


 def test_deprecated_rcsetup_attributes():
    match = "was deprecated in Matplotlib 3.9"
    with pytest.warns(mpl.MatplotlibDeprecationWarning, match=match):
        mpl.rcsetup.interactive_bk
    with pytest.warns(mpl.MatplotlibDeprecationWarning, match=match):
        mpl.rcsetup.non_interactive_bk
    with pytest.warns(mpl.MatplotlibDeprecationWarning, match=match):
        mpl.rcsetup.all_backends


 def test_entry_points_inline():
    pytest.importorskip('matplotlib_inline')
    backends = backend_registry.list_all()
diff --git a/lib/matplotlib/transforms.py b/lib/matplotlib/transforms.py
    # Some metadata about the transform, used to determine whether an
    # invalidation is affine-only
    is_affine = False
    is_bbox = _api.deprecated("3.9")(_api.classproperty(lambda cls: False))

    pass_through = False
    """
    and height, but these are not stored explicitly.
    """

    is_bbox = _api.deprecated("3.9")(_api.classproperty(lambda cls: True))
    is_affine = True

    if DEBUG:
        return self._mtx


 @_api.deprecated("3.9")
 class BboxTransformToMaxOnly(BboxTransformTo):
    """
    `BboxTransformToMaxOnly` is a transformation that linearly transforms points from
    the unit bounding box to a given `Bbox` with a fixed upper left of (0, 0).
    """
    def get_matrix(self):
        # docstring inherited
        if self._invalid:
            xmax, ymax = self._boxout.max
            if DEBUG and (xmax == 0 or ymax == 0):
                raise ValueError("Transforming to a singular bounding box.")
            self._mtx = np.array([[xmax,  0.0, 0.0],
                                  [ 0.0, ymax, 0.0],
                                  [ 0.0,  0.0, 1.0]],
                                 float)
            self._inverted = None
            self._invalid = 0
        return self._mtx


 class BboxTransformFrom(Affine2DBase):
    """
    `BboxTransformFrom` linearly transforms points from a given `Bbox` to the
diff --git a/lib/matplotlib/transforms.pyi b/lib/matplotlib/transforms.pyi
    INVALID_NON_AFFINE: int
    INVALID_AFFINE: int
    INVALID: int
    is_bbox: bool
    # Implemented as a standard attr in base class, but functionally readonly and some subclasses implement as such
    @property
    def is_affine(self) -> bool: ...
    def frozen(self) -> TransformNode: ...

 class BboxBase(TransformNode):
    is_bbox: bool
    is_affine: bool
    def frozen(self) -> Bbox: ...
    def __array__(self, *args, **kwargs): ...
 class BboxTransformTo(Affine2DBase):
    def __init__(self, boxout: BboxBase, **kwargs) -> None: ...

 class BboxTransformToMaxOnly(BboxTransformTo): ...

 class BboxTransformFrom(Affine2DBase):
    def __init__(self, boxin: BboxBase, **kwargs) -> None: ...
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,23 @@
		``TransformNode.is_bbox``
		^^^^^^^^^^^^^^^^^^^^^^^^^

		... is removed. Instead check the object using ``isinstance(..., BboxBase)``.

		``rcsetup.interactive_bk``, ``rcsetup.non_interactive_bk`` and ``rcsetup.all_backends``
		^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

		... are removed and replaced by ``matplotlib.backends.backend_registry.list_builtin``
		with the following arguments

		- ``matplotlib.backends.BackendFilter.INTERACTIVE``
		- ``matplotlib.backends.BackendFilter.NON_INTERACTIVE``
		- ``None``

		``BboxTransformToMaxOnly``
		^^^^^^^^^^^^^^^^^^^^^^^^^^

		... is removed. If you rely on this, please make a copy of old the code.
Copy link Member QuLogicMay 20, 2025 Choose a reason for hiding this comment The reason will be displayed to describe this comment to others.Learn more. I think you can replace it with a`BboxTransformTo(LockableBbox(bbox, x0=0, y0=0))`

		interval parameter of ``TimerBase.start``
		^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
		The timer interval parameter can no longer be set while starting it. The interval can be specified instead in the timer constructor, or by setting the timer.interval attribute.
Original file line number	Diff line number	Diff line change
Expand Up		@@ -1067,19 +1067,8 @@ def __del__(self):
		"""Need to stop timer and possibly disconnect timer."""
		self._timer_stop()

		@_api.delete_parameter("3.9", "interval", alternative="timer.interval")
		def start(self, interval=None):
		"""
		Start the timer object.

		Parameters
		----------
		interval : int, optional
		Timer interval in milliseconds; overrides a previously set interval
		if provided.
		"""
		if interval is not None:
		self.interval = interval
		def start(self):
		"""Start the timer."""
		self._timer_start()

		def stop(self):
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -186,7 +186,7 @@ class TimerBase:
		callbacks: list[tuple[Callable, tuple, dict[str, Any]]] \| None = ...,
		) -> None: ...
		def __del__(self) -> None: ...
		def start(self, interval: int \| None = ...) -> None: ...
		def start(self) -> None: ...
		def stop(self) -> None: ...
		@property
		def interval(self) -> int: ...
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -24,7 +24,7 @@

		import matplotlib as mpl
		from matplotlib import _api, cbook
		from matplotlib.backends importBackendFilter,backend_registry
		from matplotlib.backends import backend_registry
		from matplotlib.cbook import ls_mapper
		from matplotlib.colors import Colormap, is_color_like
		from matplotlib._fontconfig_pattern import parse_fontconfig_pattern
Expand All		@@ -34,32 +34,6 @@
		from cycler import Cycler, cycler as ccycler


		@_api.caching_module_getattr
		class __getattr__:
		@_api.deprecated(
		"3.9",
		alternative="``matplotlib.backends.backend_registry.list_builtin"
		"(matplotlib.backends.BackendFilter.INTERACTIVE)``")
		@property
		def interactive_bk(self):
		return backend_registry.list_builtin(BackendFilter.INTERACTIVE)

		@_api.deprecated(
		"3.9",
		alternative="``matplotlib.backends.backend_registry.list_builtin"
		"(matplotlib.backends.BackendFilter.NON_INTERACTIVE)``")
		@property
		def non_interactive_bk(self):
		return backend_registry.list_builtin(BackendFilter.NON_INTERACTIVE)

		@_api.deprecated(
		"3.9",
		alternative="``matplotlib.backends.backend_registry.list_builtin()``")
		@property
		def all_backends(self):
		return backend_registry.list_builtin()


		class ValidateInStrings:
		def __init__(self, key, valid, ignorecase=False, *,
		_deprecated_since=None):
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -4,9 +4,6 @@ from collections.abc import Callable, Iterable
		from typing import Any, Literal, TypeVar
		from matplotlib.typing import ColorType, LineStyleType, MarkEveryType

		interactive_bk: list[str]
		non_interactive_bk: list[str]
		all_backends: list[str]

		_T = TypeVar("_T")

Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -3,7 +3,6 @@

		import pytest

		import matplotlib as mpl
		from matplotlib.backends import BackendFilter, backend_registry


Expand DownExpand Up		@@ -95,16 +94,6 @@ def test_backend_normalization(backend, normalized):
		assert backend_registry._backend_module_name(backend) == normalized


		def test_deprecated_rcsetup_attributes():
		match = "was deprecated in Matplotlib 3.9"
		with pytest.warns(mpl.MatplotlibDeprecationWarning, match=match):
		mpl.rcsetup.interactive_bk
		with pytest.warns(mpl.MatplotlibDeprecationWarning, match=match):
		mpl.rcsetup.non_interactive_bk
		with pytest.warns(mpl.MatplotlibDeprecationWarning, match=match):
		mpl.rcsetup.all_backends


		def test_entry_points_inline():
		pytest.importorskip('matplotlib_inline')
		backends = backend_registry.list_all()
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -98,7 +98,6 @@ class TransformNode:
		# Some metadata about the transform, used to determine whether an
		# invalidation is affine-only
		is_affine = False
		is_bbox = _api.deprecated("3.9")(_api.classproperty(lambda cls: False))

		pass_through = False
		"""
Expand DownExpand Up		@@ -216,7 +215,6 @@ class BboxBase(TransformNode):
		and height, but these are not stored explicitly.
		"""

		is_bbox = _api.deprecated("3.9")(_api.classproperty(lambda cls: True))
		is_affine = True

		if DEBUG:
Expand DownExpand Up		@@ -2627,27 +2625,6 @@ def get_matrix(self):
		return self._mtx


		@_api.deprecated("3.9")
		class BboxTransformToMaxOnly(BboxTransformTo):
		"""
		`BboxTransformToMaxOnly` is a transformation that linearly transforms points from
		the unit bounding box to a given `Bbox` with a fixed upper left of (0, 0).
		"""
		def get_matrix(self):
		# docstring inherited
		if self._invalid:
		xmax, ymax = self._boxout.max
		if DEBUG and (xmax == 0 or ymax == 0):
		raise ValueError("Transforming to a singular bounding box.")
		self._mtx = np.array([[xmax, 0.0, 0.0],
		[ 0.0, ymax, 0.0],
		[ 0.0, 0.0, 1.0]],
		float)
		self._inverted = None
		self._invalid = 0
		return self._mtx


		class BboxTransformFrom(Affine2DBase):
		"""
		`BboxTransformFrom` linearly transforms points from a given `Bbox` to the
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -12,7 +12,6 @@ class TransformNode:
		INVALID_NON_AFFINE: int
		INVALID_AFFINE: int
		INVALID: int
		is_bbox: bool
		# Implemented as a standard attr in base class, but functionally readonly and some subclasses implement as such
		@property
		def is_affine(self) -> bool: ...
Expand All		@@ -24,7 +23,6 @@ class TransformNode:
		def frozen(self) -> TransformNode: ...

		class BboxBase(TransformNode):
		is_bbox: bool
		is_affine: bool
		def frozen(self) -> Bbox: ...
		def __array__(self, args, *kwargs): ...
Expand DownExpand Up		@@ -295,8 +293,6 @@ class BboxTransform(Affine2DBase):
		class BboxTransformTo(Affine2DBase):
		def __init__(self, boxout: BboxBase, **kwargs) -> None: ...

		class BboxTransformToMaxOnly(BboxTransformTo): ...

		class BboxTransformFrom(Affine2DBase):
		def __init__(self, boxin: BboxBase, **kwargs) -> None: ...

Expand Down