Changed several files to conform to PEP8

animation/creation.py

@@ -17,6 +17,7 @@ from utils.rate_functions import smooth
 
 # Drawing
 
+
 class ShowPartial(Animation):
     def update_submobject(self, submobject, starting_submobject, alpha):
         submobject.pointwise_become_partial(
@@ -26,24 +27,29 @@ class ShowPartial(Animation):
     def get_bounds(self, alpha):
         raise Exception("Not Implemented")
 
+
 class ShowCreation(ShowPartial):
     CONFIG = {
         "submobject_mode": "one_at_a_time",
     }
+
     def get_bounds(self, alpha):
         return (0, alpha)
 
+
 class Uncreate(ShowCreation):
     CONFIG = {
         "rate_func": lambda t: smooth(1 - t),
         "remover": True
     }
 
+
 class Write(ShowCreation):
     CONFIG = {
         "rate_func": None,
         "submobject_mode": "lagged_start",
     }
+
     def __init__(self, mob_or_text, **kwargs):
         digest_config(self, kwargs)
         if isinstance(mob_or_text, str):
@@ -67,6 +73,7 @@ class Write(ShowCreation):
         else:
             self.run_time = 2
 
+
 class DrawBorderThenFill(Animation):
     CONFIG = {
         "run_time": 2,
@@ -74,6 +81,7 @@ class DrawBorderThenFill(Animation):
         "stroke_color": None,
         "rate_func": double_smooth,
     }
+
     def __init__(self, vmobject, **kwargs):
         if not isinstance(vmobject, VMobject):
             raise Exception("DrawBorderThenFill only works for VMobjects")
@@ -109,10 +117,12 @@ class DrawBorderThenFill(Animation):
 
 # Fading
 
+
 class FadeOut(Transform):
     CONFIG = {
         "remover": True,
     }
+
     def __init__(self, mobject, **kwargs):
         target = mobject.copy()
         target.fade(1)
@@ -122,6 +132,7 @@ class FadeOut(Transform):
         Transform.clean_up(self, surrounding_scene)
         self.update(0)
 
+
 class FadeIn(Transform):
     def __init__(self, mobject, **kwargs):
         target = mobject.copy()
@@ -131,10 +142,12 @@ class FadeIn(Transform):
             self.starting_mobject.set_stroke(width=0)
             self.starting_mobject.set_fill(opacity=0)
 
+
 class FadeInAndShiftFromDirection(Transform):
     CONFIG = {
         "direction": DOWN,
     }
+
     def __init__(self, mobject, **kwargs):
         digest_config(self, kwargs)
         target = mobject.copy()
@@ -142,6 +155,7 @@ class FadeInAndShiftFromDirection(Transform):
         mobject.fade(1)
         Transform.__init__(self, mobject, target, **kwargs)
 
+
 class FadeInFromDown(FadeInAndShiftFromDirection):
     """
     Essential a more convenient form of FadeInAndShiftFromDirection
@@ -151,10 +165,13 @@ class FadeInFromDown(FadeInAndShiftFromDirection):
     }
 
 # Growing
+
+
 class GrowFromPoint(Transform):
     CONFIG = {
         "point_color": None,
     }
+
     def __init__(self, mobject, point, **kwargs):
         digest_config(self, kwargs)
         target = mobject.copy()
@@ -165,19 +182,23 @@ class GrowFromPoint(Transform):
         mobject.set_color(point_mob.get_color())
         Transform.__init__(self, mobject, target, **kwargs)
 
+
 class GrowFromCenter(GrowFromPoint):
     def __init__(self, mobject, **kwargs):
         GrowFromPoint.__init__(self, mobject, mobject.get_center(), **kwargs)
 
+
 class GrowArrow(GrowFromPoint):
     def __init__(self, arrow, **kwargs):
         GrowFromPoint.__init__(self, arrow, arrow.get_start(), **kwargs)
 
+
 class SpinInFromNothing(GrowFromCenter):
     CONFIG = {
         "path_func": counterclockwise_path()
     }
 
+
 class ShrinkToCenter(Transform):
     def __init__(self, mobject, **kwargs):
         Transform.__init__(

for_3b1b_videos/pi_creature_scene.py

@@ -25,6 +25,7 @@ from scene.scene import Scene
 from utils.rate_functions import squish_rate_func
 from utils.rate_functions import there_and_back
 
+
 class PiCreatureScene(Scene):
     CONFIG = {
         "total_wait_time": 0,
@@ -36,6 +37,7 @@ class PiCreatureScene(Scene):
         },
         "default_pi_creature_start_corner": DOWN + LEFT,
     }
+
     def setup(self):
         self.pi_creatures = self.create_pi_creatures()
         self.pi_creature = self.get_primary_pi_creature()
@@ -91,6 +93,7 @@ class PiCreatureScene(Scene):
         on_screen_mobjects = self.camera.extract_mobject_family_members(
             self.get_mobjects()
         )
+
         def has_bubble(pi):
             return hasattr(pi, "bubble") and \
                 pi.bubble is not None and \
@@ -142,10 +145,12 @@ class PiCreatureScene(Scene):
         )
 
     def say(self, *content, **kwargs):
-        self.pi_creature_says(self.get_primary_pi_creature(), *content, **kwargs)
+        self.pi_creature_says(
+            self.get_primary_pi_creature(), *content, **kwargs)
 
     def think(self, *content, **kwargs):
-        self.pi_creature_thinks(self.get_primary_pi_creature(), *content, **kwargs)
+        self.pi_creature_thinks(
+            self.get_primary_pi_creature(), *content, **kwargs)
 
     def compile_play_args_to_animation_list(self, *args):
         """
@@ -244,6 +249,7 @@ class PiCreatureScene(Scene):
             for pi in pi_creatures
         ]))
 
+
 class TeacherStudentsScene(PiCreatureScene):
     CONFIG = {
         "student_colors": [BLUE_D, BLUE_E, BLUE_C],
@@ -251,11 +257,13 @@ class TeacherStudentsScene(PiCreatureScene):
         "seconds_to_blink": 2,
         "screen_height": 3,
     }
+
     def setup(self):
         PiCreatureScene.setup(self)
         self.screen = ScreenRectangle(height=self.screen_height)
         self.screen.to_corner(UP + LEFT)
-        self.hold_up_spot = self.teacher.get_corner(UP+LEFT) + MED_LARGE_BUFF*UP
+        self.hold_up_spot = self.teacher.get_corner(
+            UP + LEFT) + MED_LARGE_BUFF * UP
 
     def create_pi_creatures(self):
         self.teacher = Mortimer()
@@ -340,6 +348,7 @@ class TeacherStudentsScene(PiCreatureScene):
             if bubble is None:
                 raise Exception("No pi creatures have a thought bubble")
         vect = -bubble.get_bubble_center()
+
         def func(point):
             centered = point + vect
             return radius * centered / np.linalg.norm(centered)
@@ -358,5 +367,3 @@ class TeacherStudentsScene(PiCreatureScene):
             ReplacementTransform(mobject_copy, mobject),
             self.teacher.change, target_mode,
         )
-
-

mobject/matrix.py

@@ -12,6 +12,7 @@ from constants import *
 
 VECTOR_LABEL_SCALE_FACTOR = 0.8
 
+
 def matrix_to_tex_string(matrix):
     matrix = np.array(matrix).astype("string")
     if matrix.ndim == 1:
@@ -25,9 +26,11 @@ def matrix_to_tex_string(matrix):
     ]
     return prefix + " \\\\ ".join(rows) + suffix
 
+
 def matrix_to_mobject(matrix):
     return TexMobject(matrix_to_tex_string(matrix))
 
+
 def vector_coordinate_label(vector_mob, integer_labels=True,
                             n_dim=2, color=WHITE):
     vect = np.array(vector_mob.get_end())
@@ -49,12 +52,14 @@ def vector_coordinate_label(vector_mob, integer_labels = True,
     label.add_to_back(label.rect)
     return label
 
+
 class Matrix(VMobject):
     CONFIG = {
         "v_buff": 0.5,
         "h_buff": 1,
         "add_background_rectangles": False
     }
+
     def __init__(self, matrix, **kwargs):
         """
         Matrix can either either include numbres, tex_strings,
@@ -123,15 +128,3 @@ class Matrix(VMobject):
 
     def get_brackets(self):
         return self.brackets
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