"UserWarning:Matplotlib当前正在使用agg，它是非GUI后端，因此无法显示该图."在 Pycharm 上用 pyplot 绘制图形时 [英] "UserWarning: Matplotlib is currently using agg, which is a non-GUI backend, so cannot show the figure." when plotting figure with pyplot on Pycharm

问题描述

我正在尝试使用 pyplot 绘制一个简单的图形，例如:

I am trying to plot a simple graph using pyplot, e.g.:

import matplotlib.pyplot as plt
plt.plot([1,2,3],[5,7,4])
plt.show()

但该图没有出现，我收到以下消息:

but the figure does not appear and I get the following message:

UserWarning: Matplotlib is currently using agg, which is a non-GUI backend, so cannot show the figure.

我在几个地方看到必须使用以下命令更改matplotlib的配置:

I saw in several places that one had to change the configuration of matplotlib using the following:

import matplotlib
matplotlib.use('TkAgg')
import matplotlib.pyplot as plt

我这样做了，但是却收到一条错误消息，因为它找不到模块:

I did this, but then got an error message because it cannot find a module:

ModuleNotFoundError: No module named 'tkinter'

然后，我尝试使用 pip install tkinter (在虚拟环境中)安装"tkinter"，但找不到它:

Then, I tried to install "tkinter" using pip install tkinter (inside the virtual environment), but it does not find it:

Collecting tkinter
  Could not find a version that satisfies the requirement tkinter (from versions: )
No matching distribution found for tkinter

我还应该提到，我使用虚拟环境在 Pycharm Community Edition IDE 上运行所有这些，并且我的操作系统是 Linux/Ubuntu 18.04.

I should also mention that I am running all this on Pycharm Community Edition IDE using a virtual environment, and that my operating system is Linux/Ubuntu 18.04.

我想知道如何解决此问题才能显示图形.

推荐答案

我找到了解决我的问题的方法(感谢 ImportanceOfBeingErnest).

I found a solution to my problem (thanks to the help of ImportanceOfBeingErnest).

我所要做的就是使用以下命令通过 Linux bash 终端安装 tkinter:

All I had to do was to install tkinter through the Linux bash terminal using the following command:

sudo apt-get install python3-tk

而不是通过 pip 或直接在Pycharm的虚拟环境中进行安装.

instead of installing it with pip or directly in the virtual environment in Pycharm.

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