在页面https://matplotlib.org/examples/animation/moviewriter.html上，将显示一个Python脚本以生成动画文件<fetch version="1.0" output-format="xml-platform" mapping="logical" distinct="false">
<entity name="contact">
<attribute name="fullname" />
<filter type="and">
<condition attribute="statecode" operator="eq" value="0" />
</filter>
<filter type="and">
<condition attribute="fullname" operator="like" value="%ben%" />
</filter>
</entity>
</fetch>
。
"writer_test.mp4但是，当程序中止时，视频文件import numpy as np
import matplotlib
matplotlib.use("Agg")
import matplotlib.pyplot as plt
import matplotlib.animation as manimation
FFMpegWriter = manimation.writers['ffmpeg']
metadata = dict(title='Movie Test', artist='Matplotlib',
comment='Movie support!')
writer = FFMpegWriter(fps=15, metadata=metadata)
fig = plt.figure()
l, = plt.plot([], [], 'k-o')
plt.xlim(-5, 5)
plt.ylim(-5, 5)
x0, y0 = 0, 0
with writer.saving(fig, "writer_test.mp4", 100):
for i in range(100):
x0 += 0.1 * np.random.randn()
y0 += 0.1 * np.random.randn()
l.set_data(x0, y0)
writer.grab_frame()
无法播放。
我在编写大型仿真脚本时经常遇到这个问题。即使脚本未能完成，我仍然希望在脚本中止或中断之前看到该视频。
有没有办法修改代码，即使Python程序在完成之前中止，视频文件"writer_test.mp4仍然可以播放？