如何从内存中清除matplotlib图形

Question

因此，我在前面运行代码时收到了以下警告：

Warning (from warnings module):
  File "<string>", line 558
RuntimeWarning: More than 20 figures have been opened. Figures created through 
the pyplot interface (`matplotlib.pyplot.figure`) are retained until explicitly 
closed and may consume too much memory. (To control this warning, see the rcParam
`figure.max_open_warning`).

Warning (from warnings module):
  File "<string>", line 665
RuntimeWarning: More than 20 figures have been opened. Figures created through 
the pyplot interface (`matplotlib.pyplot.figure`) are retained until explicitly 
closed and may consume too much memory. (To control this warning, see the rcParam 
`figure.max_open_warning`).

我不想撒谎，我当时很粗心，不管怎样，我还是在运行它，无视警告。 现在，每当我尝试运行脚本时，我的python shell都不会运行脚本

所以我试图从内存中删除这些图，以便再次运行脚本

我已尝试了以下操作，但仍不允许我运行代码：

1. plt.clf()
2. plt.cla()
3. f = plt.figure(){}{}
4. plt.close('all')
5. matplotlib.pyplot.figure().clear()matplotlib.pyplot.close()

如何解决此问题

Answer 1

import matplotlib._pylab_helpers as pylhelp

pylhelp.Gcf().destroy_all()

尽管这可以满足您的需要，但这不是一个受支持的接口，可能会过时。我不知道还有其他方法可以做到这一点，这是我推荐它的唯一原因