diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 48a51afc73..2fb0348f59 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -12,17 +12,6 @@ repos:
       - id: end-of-file-fixer
       - id: check-toml
         name: Validate Poetry
-  - repo: https://github.com/pycqa/isort
-    rev: 5.13.2
-    hooks:
-      - id: isort
-        name: isort (python)
-      - id: isort
-        name: isort (cython)
-        types: [cython]
-      - id: isort
-        name: isort (pyi)
-        types: [pyi]
   - repo: https://github.com/asottile/pyupgrade
     rev: v3.15.2
     hooks:
@@ -37,6 +26,10 @@ repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
     rev: v0.4.7
     hooks:
+      - id: ruff
+        name: ruff lint
+        types: [python]
+        args: [--exit-non-zero-on-fix]
       - id: ruff-format
         types: [python]
   - repo: https://github.com/PyCQA/flake8
diff --git a/conftest.py b/conftest.py
index dacb730a29..683bd2bc05 100644
--- a/conftest.py
+++ b/conftest.py
@@ -5,12 +5,6 @@
 
 from __future__ import annotations
 
-try:
-    # https://github.com/moderngl/moderngl/issues/517
-    import readline  # required to prevent a segfault on Python 3.10
-except ModuleNotFoundError:  # windows
-    pass
-
 import cairo
 import moderngl
 
diff --git a/manim/animation/indication.py b/manim/animation/indication.py
index 8e2c3996c3..89bf506ebe 100644
--- a/manim/animation/indication.py
+++ b/manim/animation/indication.py
@@ -63,7 +63,6 @@ def construct(self):
 from ..mobject.types.vectorized_mobject import VGroup, VMobject
 from ..utils.bezier import interpolate, inverse_interpolate
 from ..utils.color import GREY, YELLOW, ParsableManimColor
-from ..utils.deprecation import deprecated
 from ..utils.rate_functions import smooth, there_and_back, wiggle
 from ..utils.space_ops import normalize
 
diff --git a/manim/cli/checkhealth/checks.py b/manim/cli/checkhealth/checks.py
index 9859ced29f..dfc5f231a4 100644
--- a/manim/cli/checkhealth/checks.py
+++ b/manim/cli/checkhealth/checks.py
@@ -5,11 +5,8 @@
 
 import os
 import shutil
-import subprocess
 from typing import Callable
 
-from ..._config import config
-
 __all__ = ["HEALTH_CHECKS"]
 
 HEALTH_CHECKS = []
diff --git a/manim/cli/default_group.py b/manim/cli/default_group.py
index 06f1c0520a..f4c8c33dbb 100644
--- a/manim/cli/default_group.py
+++ b/manim/cli/default_group.py
@@ -10,6 +10,8 @@
     of ``click.Group``.
 """
 
+from __future__ import annotations
+
 import warnings
 
 import cloup
diff --git a/manim/mobject/graph.py b/manim/mobject/graph.py
index 53d7ed464a..d54c1e0457 100644
--- a/manim/mobject/graph.py
+++ b/manim/mobject/graph.py
@@ -18,6 +18,7 @@
 if TYPE_CHECKING:
     from typing_extensions import TypeAlias
 
+    from manim.scene.scene import Scene
     from manim.typing import Point3D
 
     NxGraph: TypeAlias = nx.classes.graph.Graph | nx.classes.digraph.DiGraph
@@ -477,7 +478,7 @@ def _determine_graph_layout(
             return cast(LayoutFunction, layout)(
                 nx_graph, scale=layout_scale, **layout_config
             )
-        except TypeError as e:
+        except TypeError:
             raise ValueError(
                 f"The layout '{layout}' is neither a recognized layout, a layout function,"
                 "nor a vertex placement dictionary.",
diff --git a/manim/mobject/graphing/scale.py b/manim/mobject/graphing/scale.py
index b301d1ff15..5a3a30410b 100644
--- a/manim/mobject/graphing/scale.py
+++ b/manim/mobject/graphing/scale.py
@@ -146,7 +146,9 @@ def inverse_function(self, value: float) -> float:
         """Inverse of ``function``. The value must be greater than 0"""
         if isinstance(value, np.ndarray):
             condition = value.any() <= 0
-            func = lambda value, base: np.log(value) / np.log(base)
+
+            def func(value, base):
+                return np.log(value) / np.log(base)
         else:
             condition = value <= 0
             func = math.log
diff --git a/manim/mobject/opengl/opengl_mobject.py b/manim/mobject/opengl/opengl_mobject.py
index 3bdbd7c0b5..ac34e73509 100644
--- a/manim/mobject/opengl/opengl_mobject.py
+++ b/manim/mobject/opengl/opengl_mobject.py
@@ -952,33 +952,6 @@ def replace_submobject(self, index, new_submob):
         self.assemble_family()
         return self
 
-    def invert(self, recursive=False):
-        """Inverts the list of :attr:`submobjects`.
-
-        Parameters
-        ----------
-        recursive
-            If ``True``, all submobject lists of this mobject's family are inverted.
-
-        Examples
-        --------
-
-        .. manim:: InvertSumobjectsExample
-
-            class InvertSumobjectsExample(Scene):
-                def construct(self):
-                    s = VGroup(*[Dot().shift(i*0.1*RIGHT) for i in range(-20,20)])
-                    s2 = s.copy()
-                    s2.invert()
-                    s2.shift(DOWN)
-                    self.play(Write(s), Write(s2))
-        """
-        if recursive:
-            for submob in self.submobjects:
-                submob.invert(recursive=True)
-        list.reverse(self.submobjects)
-        self.assemble_family()
-
     # Submobject organization
 
     def arrange(self, direction=RIGHT, center=True, **kwargs):
@@ -1319,7 +1292,8 @@ def construct(self):
         if recursive:
             for submob in self.submobjects:
                 submob.invert(recursive=True)
-        list.reverse(self.submobjects)
+        self.submobjects.reverse()
+        # Is there supposed to be an assemble_family here?
 
     # Copying
 
diff --git a/manim/mobject/opengl/opengl_surface.py b/manim/mobject/opengl/opengl_surface.py
index bcf608909f..565b8c71cf 100644
--- a/manim/mobject/opengl/opengl_surface.py
+++ b/manim/mobject/opengl/opengl_surface.py
@@ -12,7 +12,6 @@
 from manim.utils.bezier import integer_interpolate, interpolate
 from manim.utils.color import *
 from manim.utils.config_ops import _Data, _Uniforms
-from manim.utils.deprecation import deprecated
 from manim.utils.images import change_to_rgba_array, get_full_raster_image_path
 from manim.utils.iterables import listify
 from manim.utils.space_ops import normalize_along_axis
diff --git a/manim/mobject/text/code_mobject.py b/manim/mobject/text/code_mobject.py
index e85f3bf0ba..b7aa6a7980 100644
--- a/manim/mobject/text/code_mobject.py
+++ b/manim/mobject/text/code_mobject.py
@@ -17,7 +17,6 @@
 from pygments.lexers import get_lexer_by_name, guess_lexer_for_filename
 from pygments.styles import get_all_styles
 
-from manim import logger
 from manim.constants import *
 from manim.mobject.geometry.arc import Dot
 from manim.mobject.geometry.polygram import RoundedRectangle
diff --git a/manim/mobject/text/text_mobject.py b/manim/mobject/text/text_mobject.py
index 39a1cdd171..6f7b4d9d9f 100644
--- a/manim/mobject/text/text_mobject.py
+++ b/manim/mobject/text/text_mobject.py
@@ -56,7 +56,6 @@ def construct(self):
 
 import copy
 import hashlib
-import os
 import re
 from collections.abc import Iterable, Sequence
 from contextlib import contextmanager
diff --git a/manim/mobject/three_d/three_dimensions.py b/manim/mobject/three_d/three_dimensions.py
index 540a99bfe9..accb077746 100644
--- a/manim/mobject/three_d/three_dimensions.py
+++ b/manim/mobject/three_d/three_dimensions.py
@@ -34,14 +34,8 @@
 from manim.mobject.opengl.opengl_mobject import OpenGLMobject
 from manim.mobject.types.vectorized_mobject import VGroup, VMobject
 from manim.utils.color import (
-    BLUE,
-    BLUE_D,
-    BLUE_E,
-    LIGHT_GREY,
-    WHITE,
     ManimColor,
     ParsableManimColor,
-    interpolate_color,
 )
 from manim.utils.iterables import tuplify
 from manim.utils.space_ops import normalize, perpendicular_bisector, z_to_vector
diff --git a/manim/mobject/types/vectorized_mobject.py b/manim/mobject/types/vectorized_mobject.py
index cc938065d3..328a8acce8 100644
--- a/manim/mobject/types/vectorized_mobject.py
+++ b/manim/mobject/types/vectorized_mobject.py
@@ -911,7 +911,6 @@ def add_line_to(self, point: Point3D) -> Self:
         :class:`VMobject`
             ``self``
         """
-        nppcc = self.n_points_per_cubic_curve
         self.add_cubic_bezier_curve_to(
             *(
                 interpolate(self.get_last_point(), point, t)
@@ -1060,7 +1059,6 @@ def construct(self):
                     vmob.set_points_as_corners(corners).scale(2)
                     self.add(vmob)
         """
-        nppcc = self.n_points_per_cubic_curve
         points = np.array(points)
         # This will set the handles aligned with the anchors.
         # Id est, a bezier curve will be the segment from the two anchors such that the handles belongs to this segment.
diff --git a/manim/renderer/opengl_renderer.py b/manim/renderer/opengl_renderer.py
index 5a4d692657..8347f8a49e 100644
--- a/manim/renderer/opengl_renderer.py
+++ b/manim/renderer/opengl_renderer.py
@@ -1,7 +1,6 @@
 from __future__ import annotations
 
 import itertools as it
-import sys
 import time
 from functools import cached_property
 from typing import Any
@@ -569,7 +568,7 @@ def pixel_coords_to_space_coords(self, px, py, relative=False, top_left=False):
         if pixel_shape is None:
             return np.array([0, 0, 0])
         pw, ph = pixel_shape
-        fw, fh = config["frame_width"], config["frame_height"]
+        fh = config["frame_height"]
         fc = self.camera.get_center()
         if relative:
             return 2 * np.array([px / pw, py / ph, 0])
diff --git a/manim/scene/scene.py b/manim/scene/scene.py
index 1f5faed4ec..3f80c91864 100644
--- a/manim/scene/scene.py
+++ b/manim/scene/scene.py
@@ -230,7 +230,7 @@ def render(self, preview: bool = False):
             self.construct()
         except EndSceneEarlyException:
             pass
-        except RerunSceneException as e:
+        except RerunSceneException:
             self.remove(*self.mobjects)
             self.renderer.clear_screen()
             self.renderer.num_plays = 0
diff --git a/manim/utils/bezier.py b/manim/utils/bezier.py
index 709f8b3bf4..ed1c659b4c 100644
--- a/manim/utils/bezier.py
+++ b/manim/utils/bezier.py
@@ -2,17 +2,6 @@
 
 from __future__ import annotations
 
-from manim.typing import (
-    BezierPoints,
-    ColVector,
-    MatrixMN,
-    Point3D,
-    Point3D_Array,
-    PointDType,
-    QuadraticBezierPoints,
-    QuadraticBezierPoints_Array,
-)
-
 __all__ = [
     "bezier",
     "partial_bezier_points",
@@ -35,15 +24,31 @@
 
 from collections.abc import Sequence
 from functools import reduce
-from typing import Any, Callable, overload
+from typing import TYPE_CHECKING, Any, Callable, overload
 
 import numpy as np
-import numpy.typing as npt
 from scipy import linalg
 
+from manim.typing import PointDType
+
 from ..utils.simple_functions import choose
 from ..utils.space_ops import cross2d, find_intersection
 
+if TYPE_CHECKING:
+    import numpy.typing as npt
+
+    from manim.typing import (
+        BezierPoints,
+        BezierPoints_Array,
+        ColVector,
+        MatrixMN,
+        Point3D,
+        Point3D_Array,
+    )
+
+# l is a commonly used name in linear algebra
+# ruff: noqa: E741
+
 
 def bezier(
     points: Sequence[Point3D] | Point3D_Array,
diff --git a/manim/utils/color/AS2700.py b/manim/utils/color/AS2700.py
index 83a3e6abd0..7b6dc6256c 100644
--- a/manim/utils/color/AS2700.py
+++ b/manim/utils/color/AS2700.py
@@ -24,6 +24,8 @@
 
 """
 
+from __future__ import annotations
+
 from .core import ManimColor
 
 B11_RICH_BLUE = ManimColor("#2B3770")
diff --git a/manim/utils/color/BS381.py b/manim/utils/color/BS381.py
index 50ae95b96c..60e8567a50 100644
--- a/manim/utils/color/BS381.py
+++ b/manim/utils/color/BS381.py
@@ -25,6 +25,8 @@
 
 """
 
+from __future__ import annotations
+
 from .core import ManimColor
 
 BS381_101 = ManimColor("#94BFAC")
diff --git a/manim/utils/color/X11.py b/manim/utils/color/X11.py
index 0379717eac..4338660200 100644
--- a/manim/utils/color/X11.py
+++ b/manim/utils/color/X11.py
@@ -23,6 +23,8 @@
 .. automanimcolormodule:: manim.utils.color.X11
 """
 
+from __future__ import annotations
+
 from .core import ManimColor
 
 ALICEBLUE = ManimColor("#F0F8FF")
diff --git a/manim/utils/color/XKCD.py b/manim/utils/color/XKCD.py
index db9bccaed3..4c38af6862 100644
--- a/manim/utils/color/XKCD.py
+++ b/manim/utils/color/XKCD.py
@@ -24,6 +24,8 @@
 
 """
 
+from __future__ import annotations
+
 from .core import ManimColor
 
 ACIDGREEN = ManimColor("#8FFE09")
diff --git a/manim/utils/color/__init__.py b/manim/utils/color/__init__.py
index cfffc4edc9..362a31ac25 100644
--- a/manim/utils/color/__init__.py
+++ b/manim/utils/color/__init__.py
@@ -47,7 +47,7 @@
 
 """
 
-from typing import Dict, List
+from __future__ import annotations
 
 from . import AS2700, BS381, X11, XKCD
 from .core import *
diff --git a/manim/utils/color/manim_colors.py b/manim/utils/color/manim_colors.py
index 863cb5a99f..a3eacc83a4 100644
--- a/manim/utils/color/manim_colors.py
+++ b/manim/utils/color/manim_colors.py
@@ -121,7 +121,7 @@ def named_lines_group(length, colors, names, text_colors, align_to_block):
 
 """
 
-from typing import List
+from __future__ import annotations
 
 from .core import ManimColor
 
diff --git a/manim/utils/docbuild/autoaliasattr_directive.py b/manim/utils/docbuild/autoaliasattr_directive.py
index 6dd645a9fd..6cb4137833 100644
--- a/manim/utils/docbuild/autoaliasattr_directive.py
+++ b/manim/utils/docbuild/autoaliasattr_directive.py
@@ -12,7 +12,6 @@
 
 if TYPE_CHECKING:
     from sphinx.application import Sphinx
-    from typing_extensions import TypeAlias
 
 __all__ = ["AliasAttrDocumenter"]
 
@@ -49,7 +48,9 @@ def smart_replace(base: str, alias: str, substitution: str) -> str:
     occurrences = []
     len_alias = len(alias)
     len_base = len(base)
-    condition = lambda char: (not char.isalnum()) and char != "_"
+
+    def condition(char: str) -> bool:
+        return not char.isalnum() and char != "_"
 
     start = 0
     i = 0
diff --git a/manim/utils/docbuild/manim_directive.py b/manim/utils/docbuild/manim_directive.py
index 111b40fa4d..8b65293956 100644
--- a/manim/utils/docbuild/manim_directive.py
+++ b/manim/utils/docbuild/manim_directive.py
@@ -82,7 +82,6 @@ def construct(self):
 
 import csv
 import itertools as it
-import os
 import re
 import shutil
 import sys
diff --git a/manim/utils/docbuild/module_parsing.py b/manim/utils/docbuild/module_parsing.py
index 87bfa76c40..5166ff4801 100644
--- a/manim/utils/docbuild/module_parsing.py
+++ b/manim/utils/docbuild/module_parsing.py
@@ -47,6 +47,7 @@
 # In the following, we will use ``type(xyz) is xyz_type`` instead of
 # isinstance checks to make sure no subclasses of the type pass the
 # check
+# ruff: noqa: E721
 
 
 def parse_module_attributes() -> tuple[AliasDocsDict, DataDict]:
diff --git a/manim/utils/file_ops.py b/manim/utils/file_ops.py
index 58c82464a1..7efcee02c5 100644
--- a/manim/utils/file_ops.py
+++ b/manim/utils/file_ops.py
@@ -32,7 +32,7 @@
 
 from manim import __version__, config, logger
 
-from .. import config, console
+from .. import console
 
 
 def is_mp4_format() -> bool:
diff --git a/manim/utils/ipython_magic.py b/manim/utils/ipython_magic.py
index 7911da9cf3..601d4d6f8e 100644
--- a/manim/utils/ipython_magic.py
+++ b/manim/utils/ipython_magic.py
@@ -3,13 +3,12 @@
 from __future__ import annotations
 
 import mimetypes
-import os
 import shutil
 from datetime import datetime
 from pathlib import Path
 from typing import Any
 
-from manim import Group, config, logger, tempconfig
+from manim import config, logger, tempconfig
 from manim.__main__ import main
 from manim.renderer.shader import shader_program_cache
 
diff --git a/manim/utils/module_ops.py b/manim/utils/module_ops.py
index 2ff7291470..03f297030d 100644
--- a/manim/utils/module_ops.py
+++ b/manim/utils/module_ops.py
@@ -2,7 +2,6 @@
 
 import importlib.util
 import inspect
-import os
 import re
 import sys
 import types
diff --git a/manim/utils/simple_functions.py b/manim/utils/simple_functions.py
index 72a0f8ddbd..898c1d527b 100644
--- a/manim/utils/simple_functions.py
+++ b/manim/utils/simple_functions.py
@@ -10,9 +10,7 @@
 ]
 
 
-import inspect
 from functools import lru_cache
-from types import MappingProxyType
 from typing import Callable
 
 import numpy as np
diff --git a/manim/utils/space_ops.py b/manim/utils/space_ops.py
index ec47d136eb..197621fce6 100644
--- a/manim/utils/space_ops.py
+++ b/manim/utils/space_ops.py
@@ -10,7 +10,7 @@
 from mapbox_earcut import triangulate_float32 as earcut
 from scipy.spatial.transform import Rotation
 
-from manim.constants import DOWN, OUT, PI, RIGHT, TAU, UP, RendererType
+from manim.constants import DOWN, OUT, PI, RIGHT, TAU, UP
 from manim.utils.iterables import adjacent_pairs
 
 if TYPE_CHECKING:
diff --git a/pyproject.toml b/pyproject.toml
index 7b05d004df..ebf7a27b5d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -134,6 +134,47 @@ extend-exclude = [
 ]
 fix = true
 
+[tool.ruff.lint]
+select = [
+  "E",
+  "F",
+  "I",
+]
+
+ignore = [
+  # due to the import * used in manim
+  "F403",
+  "F405",
+  # as recommended by https://docs.astral.sh/ruff/formatter/#conflicting-lint-rules
+  "E111",
+  "E114",
+  "E117",
+  "E501",
+]
+
+# Allow unused variables when underscore-prefixed.
+dummy-variable-rgx = "^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$"
+
+[tool.ruff.lint.per-file-ignores]
+"tests/*" = [
+  # unused variable
+  "F841",
+  # from __future__ import annotations
+  "I002",
+]
+
+"example_scenes/*" = [
+  "I002",
+]
+
+"__init__.py" = [
+  "F401",
+  "F403",
+]
+
+[tool.ruff.lint.isort]
+required-imports = ["from __future__ import annotations"]
+
 [tool.ruff.format]
 docstring-code-format = true
 
diff --git a/scripts/dev_changelog.py b/scripts/dev_changelog.py
index d226b0195f..35e77dd798 100755
--- a/scripts/dev_changelog.py
+++ b/scripts/dev_changelog.py
@@ -301,7 +301,6 @@ def main(token, prior, tag, additional, outfile):
 
                 for PR in pr_by_labels[label]:
                     num = PR.number
-                    url = PR.html_url
                     title = PR.title
                     label = PR.labels
                     f.write(f"* :pr:`{num}`: {title}\n")
diff --git a/scripts/extract_frames.py b/scripts/extract_frames.py
index d3c7691895..a8900de5c0 100644
--- a/scripts/extract_frames.py
+++ b/scripts/extract_frames.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import pathlib
 import sys
 
diff --git a/tests/interface/test_commands.py b/tests/interface/test_commands.py
index d902d3b07b..c6223a78cb 100644
--- a/tests/interface/test_commands.py
+++ b/tests/interface/test_commands.py
@@ -8,7 +8,7 @@
 
 from click.testing import CliRunner
 
-from manim import __version__, capture, tempconfig
+from manim import __version__, capture
 from manim.__main__ import main
 from manim.cli.checkhealth.checks import HEALTH_CHECKS
 
diff --git a/tests/module/mobject/geometry/test_unit_geometry.py b/tests/module/mobject/geometry/test_unit_geometry.py
index 1729752fff..45f4da279f 100644
--- a/tests/module/mobject/geometry/test_unit_geometry.py
+++ b/tests/module/mobject/geometry/test_unit_geometry.py
@@ -4,10 +4,10 @@
 
 import numpy as np
 
-logger = logging.getLogger(__name__)
-
 from manim import BackgroundRectangle, Circle, Sector
 
+logger = logging.getLogger(__name__)
+
 
 def test_get_arc_center():
     np.testing.assert_array_equal(
diff --git a/tests/module/mobject/graphing/test_coordinate_system.py b/tests/module/mobject/graphing/test_coordinate_system.py
index 4aa71f8968..727bb0ba68 100644
--- a/tests/module/mobject/graphing/test_coordinate_system.py
+++ b/tests/module/mobject/graphing/test_coordinate_system.py
@@ -5,9 +5,22 @@
 import numpy as np
 import pytest
 
-from manim import LEFT, ORIGIN, PI, UR, Axes, Circle, ComplexPlane
+from manim import (
+    LEFT,
+    ORIGIN,
+    PI,
+    UR,
+    Axes,
+    Circle,
+    ComplexPlane,
+    Dot,
+    NumberPlane,
+    PolarPlane,
+    ThreeDAxes,
+    config,
+    tempconfig,
+)
 from manim import CoordinateSystem as CS
-from manim import Dot, NumberPlane, PolarPlane, ThreeDAxes, config, tempconfig
 
 
 def test_initial_config():
diff --git a/tests/module/mobject/text/test_texmobject.py b/tests/module/mobject/text/test_texmobject.py
index 9f487be4e8..c8d4f51f84 100644
--- a/tests/module/mobject/text/test_texmobject.py
+++ b/tests/module/mobject/text/test_texmobject.py
@@ -6,8 +6,6 @@
 import pytest
 
 from manim import MathTex, SingleStringMathTex, Tex, TexTemplate, config, tempconfig
-from manim.mobject.types.vectorized_mobject import VMobject
-from manim.utils.color import RED
 
 
 def test_MathTex():
diff --git a/tests/module/utils/test_space_ops.py b/tests/module/utils/test_space_ops.py
index eef307b4b6..13584c797d 100644
--- a/tests/module/utils/test_space_ops.py
+++ b/tests/module/utils/test_space_ops.py
@@ -4,7 +4,7 @@
 import pytest
 
 from manim.utils.space_ops import *
-from manim.utils.space_ops import shoelace, shoelace_direction
+from manim.utils.space_ops import shoelace
 
 
 def test_rotate_vector():
diff --git a/tests/opengl/test_coordinate_system_opengl.py b/tests/opengl/test_coordinate_system_opengl.py
index 603f8eba54..ed596d7e9d 100644
--- a/tests/opengl/test_coordinate_system_opengl.py
+++ b/tests/opengl/test_coordinate_system_opengl.py
@@ -5,9 +5,21 @@
 import numpy as np
 import pytest
 
-from manim import LEFT, ORIGIN, PI, UR, Axes, Circle, ComplexPlane
+from manim import (
+    LEFT,
+    ORIGIN,
+    PI,
+    UR,
+    Axes,
+    Circle,
+    ComplexPlane,
+    NumberPlane,
+    PolarPlane,
+    ThreeDAxes,
+    config,
+    tempconfig,
+)
 from manim import CoordinateSystem as CS
-from manim import NumberPlane, PolarPlane, ThreeDAxes, config, tempconfig
 
 
 def test_initial_config(using_opengl_renderer):
diff --git a/tests/test_config.py b/tests/test_config.py
index ed2f4b59c0..0c60d59b10 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -1,6 +1,5 @@
 from __future__ import annotations
 
-import os
 import tempfile
 from pathlib import Path
 
@@ -103,7 +102,6 @@ def test_custom_dirs(tmp_path):
             "frame_rate": 15,
             "pixel_height": 854,
             "pixel_width": 480,
-            "save_sections": True,
             "sections_dir": "{media_dir}/test_sections",
             "video_dir": "{media_dir}/test_video",
             "partial_movie_dir": "{media_dir}/test_partial_movie_dir",
diff --git a/tests/test_graphical_units/test_axes.py b/tests/test_graphical_units/test_axes.py
index 8e450511d2..2e06300e46 100644
--- a/tests/test_graphical_units/test_axes.py
+++ b/tests/test_graphical_units/test_axes.py
@@ -293,7 +293,10 @@ def test_get_z_axis_label(scene):
 @frames_comparison
 def test_polar_graph(scene):
     polar = PolarPlane()
-    r = lambda theta: 4 * np.sin(theta * 4)
+
+    def r(theta):
+        return 4 * np.sin(theta * 4)
+
     polar_graph = polar.plot_polar_graph(r)
     scene.add(polar, polar_graph)
 
diff --git a/tests/test_graphical_units/test_tex_mobject.py b/tests/test_graphical_units/test_tex_mobject.py
index d92162b379..b229e1cb0f 100644
--- a/tests/test_graphical_units/test_tex_mobject.py
+++ b/tests/test_graphical_units/test_tex_mobject.py
@@ -1,5 +1,3 @@
-import pytest
-
 from manim import *
 from manim.utils.testing.frames_comparison import frames_comparison
 
diff --git a/tests/test_graphical_units/test_text.py b/tests/test_graphical_units/test_text.py
index 21649222be..ab5d4fbeb1 100644
--- a/tests/test_graphical_units/test_text.py
+++ b/tests/test_graphical_units/test_text.py
@@ -1,6 +1,4 @@
-import pytest
-
-from manim import RED, MarkupText, Text, VGroup, VMobject
+from manim import RED, MarkupText, Text, VMobject
 
 __module_test__ = "text"