CoordinateSystemExample 未能正常运行

from manimlib import *

class CoordinateSystemExample(Scene): def construct(self): axes = Axes( # x-axis ranges from -1 to 10, with a default step size of 1 x_range=(-1, 10), # y-axis ranges from -2 to 2 with a step size of 0.5 y_range=(-2, 2, 0.5), # The axes will be stretched so as to match the specified # height and width height=6, width=10, # Axes is made of two NumberLine mobjects. You can specify # their configuration with axis_config axis_config={ "stroke_color": GREY_A, "stroke_width": 2, }, # Alternatively, you can specify configuration for just one # of them, like this. y_axis_config={ "include_tip": False, } ) # Keyword arguments of add_coordinate_labels can be used to # configure the DecimalNumber mobjects which it creates and # adds to the axes axes.add_coordinate_labels( font_size=20, num_decimal_places=1, ) self.add(axes)

    # Axes descends from the CoordinateSystem class, meaning
    # you can call call axes.coords_to_point, abbreviated to
    # axes.c2p, to associate a set of coordinates with a point, like so:
    dot = Dot(color=RED)
    dot.move_to(axes.c2p(0, 0))
    self.play(FadeIn(dot, scale=0.5))
    self.play(dot.animate.move_to(axes.c2p(3, 2)))
    self.wait()
    self.play(dot.animate.move_to(axes.c2p(5, 0.5)))
    self.wait()

    # Similarly, you can call axes.point_to_coords, or axes.p2c
    # print(axes.p2c(dot.get_center()))

    # We can draw lines from the axes to better mark the coordinates
    # of a given point.
    # Here, the always_redraw command means that on each new frame
    # the lines will be redrawn
    h_line = always_redraw(lambda: axes.get_h_line(dot.get_left()))
    v_line = always_redraw(lambda: axes.get_v_line(dot.get_bottom()))

    self.play(
        ShowCreation(h_line),
        ShowCreation(v_line),
    )
    self.play(dot.animate.move_to(axes.c2p(3, -2)))
    self.wait()
    self.play(dot.animate.move_to(axes.c2p(1, 1)))
    self.wait()

    # If we tie