VSCode 无法切换 matplotlib 后端：ImportError:

Question

我只想通过在 VSCode 中运行 Python 进行绘图，但结果失败了。我无法将后端从 agg 切换到 Qt5Agg。但是，我可以在 VSCode 的终端中轻松地这样做......

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。