当我将 repeat = True 作为参数时,为什么 FuncAnimation 不重复?

Why isn't FuncAnimation repeating when I'm put repeat = True as a parameter?

import matplotlib.image as mpimg
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.animation as animation
from matplotlib.widgets import Button
from matplotlib.widgets import Slider
fig = plt.figure()
image_list =  ['downloads/20120831_194836_aia.lev1_euv_12s_4k.jpg', 'downloads/20120831_194936_aia.lev1_euv_12s_4k.jpg', 'downloads/20120831_195036_aia.lev1_euv_12s_4k.jpg']

list = []


for raw_image in image_list:
    image1 = mpimg.imread(raw_image)
    real_image1 = plt.imshow(image1)
    list.append([real_image1])


def update_plot(t):
    print(t)
    return list[t]


anim = animation.FuncAnimation(fig, update_plot, repeat = True, interval=1, blit=False,
                                repeat_delay=200)
plt.show()

我正在尝试使用列表中的 3 个 jpg 图像创建一个 func 动画。程序运行 3 个图像 1 次后,出现错误。当我打印 't' 时,它永远不会重置为 0。

错误:

Traceback (most recent call last):
  File "/Users/jamisenma/opt/anaconda3/lib/python3.7/site-packages/matplotlib/backend_bases.py", line 1194, in _on_timer
    ret = func(*args, **kwargs)
  File "/Users/jamisenma/opt/anaconda3/lib/python3.7/site-packages/matplotlib/animation.py", line 1447, in _step
    still_going = Animation._step(self, *args)
  File "/Users/jamisenma/opt/anaconda3/lib/python3.7/site-packages/matplotlib/animation.py", line 1173, in _step
    self._draw_next_frame(framedata, self._blit)
  File "/Users/jamisenma/opt/anaconda3/lib/python3.7/site-packages/matplotlib/animation.py", line 1192, in _draw_next_frame
    self._draw_frame(framedata)
  File "/Users/jamisenma/opt/anaconda3/lib/python3.7/site-packages/matplotlib/animation.py", line 1755, in _draw_frame
    self._drawn_artists = self._func(framedata, *self._args)
  File "/Users/jamisenma/Library/Application Support/JetBrains/PyCharmCE2020.1/scratches/scratch_59.py", line 19, in update_plot
    return list[t]
IndexError: list index out of range

有人知道问题出在哪里吗?

您未能提供到预期的 MRE,并且没有进行预期的初始调试工作。所以,我不能确定。

然而,我最大的怀疑是来自 update_plot 的 return,它使用了一个你未能向我们展示的参数——并将其用作全局序列的下标,该序列隐藏了一个 pre -定义类型。

尝试使用这种简单的技术进行调试:

def update_plot(t):
    print("ENTER update_plot; t =", t, "\n list =", list)
    print(t)
    return list[t]

我希望,就在您失败之前,您会看到 t >= len(list)

一般提示:不要 为变量提供与内置或预定义名称相同的名称。特别是,更改 list.

解决了。我必须添加 frames = len(list) 作为 FuncAnimation

的参数