VSCode 无法切换 matplotlib 后端：ImportError：无法加载需要“qt5”交互框架的后端“Qt5Agg”

Question

我只想通过在 VSCode 中运行 Python 进行绘图，但结果却失败了。我无法将后端从 agg 切换到 Qt5Agg。但是，我可以轻松地在 VSCode 的终端中执行此操作...

VSCode集成终端的问题如下图，我尝试了各种解决方案都失败了..：

(base) user@user:~/test$ export MPLBACKEND=Qt5Agg
(base) user@user:~/test$ python
Python 3.8.3 (default, Jul  2 2020, 16:21:59) 
[GCC 7.3.0] :: Anaconda, Inc. on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import matplotlib
>>> print("Using:",matplotlib.get_backend())
Using: Qt5Agg
>>> import matplotlib.pyplot as plt
>>> plt.plot([1,2,3], [10, 20, 30])
[<matplotlib.lines.Line2D object at 0x7fe26b403d00>]
>>> plt.show()
>>> print("Using:",matplotlib.get_backend())
Using: agg
>>> plt.switch_backend('Qt5Agg')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/zslwyuan-laptop/anaconda3/lib/python3.8/site-packages/matplotlib-3.3.0rc1+627.gff821ba32-py3.8-linux-x86_64.egg/matplotlib/pyplot.py", line 268, in switch_backend
    raise ImportError(
ImportError: Cannot load backend 'Qt5Agg' which requires the 'qt5' interactive framework, as 'headless' is currently running
>>> 

任何帮助将不胜感激。!!

Answer 1

我有同样的问题。在设置中将“terminal.integrated.inheritEnv”更改为 true 解决了这个问题。我不知道为什么，还没有遇到任何副作用。