python3.6 matplotlib无法正常显示图片（Agg问题）

末蓝、 2022-12-05 12:08 250阅读 0赞

## 0.环境 ##

ubuntu16.04
    python3.6

## 1.问题 ##

[”UserWarning: Matplotlib is currently using agg, which is a non-GUI backend, so cannot show the figure.” when plotting figure with pyplot on Pycharm”][UserWarning_ Matplotlib is currently using agg_ which is a non-GUI backend_ so cannot show the figure._ when plotting figure with pyplot on Pycharm]

## 2.分析 ##

和agg有关，之前印象中用过，近期忘记了。直接查询agg与问题userwarning提示。

参考：[“UserWarning: Matplotlib is currently using agg, which is a non-GUI backend, so cannot show the figure.” when plotting figure with pyplot on Pycharm][UserWarning_ Matplotlib is currently using agg_ which is a non-GUI backend_ so cannot show the figure._ when plotting figure with pyplot on Pycharm]

## 3.解决 ##

代码中添加：

import matplotlib
    matplotlib.use('TkAgg')

终端中运行安装python3-tk：

sudo apt-get -y install python3.6-tk

因为是3.6的python，所以必须安装python3.6版本的tkinter!!!

## 参考 ##

[1.“UserWarning: Matplotlib is currently using agg, which is a non-GUI backend, so cannot show the figure.” when plotting figure with pyplot on Pycharm][UserWarning_ Matplotlib is currently using agg_ which is a non-GUI backend_ so cannot show the figure._ when plotting figure with pyplot on Pycharm]

[UserWarning_ Matplotlib is currently using agg_ which is a non-GUI backend_ so cannot show the figure._ when plotting figure with pyplot on Pycharm]: https://stackoverflow.com/questions/56656777/userwarning-matplotlib-is-currently-using-agg-which-is-a-non-gui-backend-so