chore: only import some classes when type checking

manimlib/camera/camera.py

@@ -12,7 +12,6 @@ from colour import Color
 from manimlib.constants import *
 from manimlib.mobject.mobject import Mobject
 from manimlib.mobject.mobject import Point
-from manimlib.shader_wrapper import ShaderWrapper
 from manimlib.utils.config_ops import digest_config
 from manimlib.utils.simple_functions import fdiv
 from manimlib.utils.simple_functions import clip
@@ -22,6 +21,10 @@ from manimlib.utils.space_ops import rotation_matrix_transpose
 from manimlib.utils.space_ops import quaternion_from_angle_axis
 from manimlib.utils.space_ops import quaternion_mult
 
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
+    from manimlib.shader_wrapper import ShaderWrapper
+
 
 class CameraFrame(Mobject):
     CONFIG = {

manimlib/mobject/types/surface.py

@@ -7,7 +7,6 @@ import numpy as np
 import numpy.typing as npt
 
 from manimlib.constants import *
-from manimlib.camera.camera import Camera
 from manimlib.mobject.mobject import Mobject
 from manimlib.utils.bezier import integer_interpolate
 from manimlib.utils.bezier import interpolate
@@ -15,6 +14,10 @@ from manimlib.utils.images import get_full_raster_image_path
 from manimlib.utils.iterables import listify
 from manimlib.utils.space_ops import normalize_along_axis
 
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
+    from manimlib.camera.camera import Camera
+
 
 class Surface(Mobject):
     CONFIG = {

manimlib/utils/debug.py

@@ -5,11 +5,14 @@ import numpy as np
 from typing import Callable
 
 from manimlib.constants import BLACK
-from manimlib.mobject.mobject import Mobject
 from manimlib.mobject.numbers import Integer
 from manimlib.mobject.types.vectorized_mobject import VGroup
 from manimlib.logger import log
 
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
+    from manimlib.mobject.mobject import Mobject
+
 
 def print_family(mobject: Mobject, n_tabs: int = 0) -> None:
     """For debugging purposes"""

manimlib/utils/family_ops.py

@@ -3,7 +3,9 @@ from __future__ import annotations
 import itertools as it
 from typing import Iterable
 
-from manimlib.mobject.mobject import Mobject
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
+    from manimlib.mobject.mobject import Mobject
 
 
 def extract_mobject_family_members(