使用matplotlib plt.show()不可见图 [英] Plots are not visible using matplotlib plt.show()

问题描述

我真的是Python和Linux的新手，我需要帮助，我尝试使用matplotlib通过以下方式显示简单绘图:

I'm really new in Python and Linux and I need help, I tried to use matplotlib for showing a simple plot in the following way:

from matplotlib import pyplot as plt

plt.plot([5,6,7,8], [7,3,8,3])
plt.show()

但是，当我运行 python3 test.py 时，我得到以下输出:

But, when I run python3 test.py, I get the following output:

/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_gtk3agg.py:18: UserWarning: The Gtk3Agg backend is known to not work on Python 3.x with pycairo. Try installing cairocffi.
  "The Gtk3Agg backend is known to not work on Python 3.x with pycairo. "
Traceback (most recent call last):
  File "/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_gtk3agg.py", line 69, in on_draw_event
    buf, cairo.FORMAT_ARGB32, width, height)
NotImplementedError: Surface.create_for_data: Not Implemented yet.
Traceback (most recent call last):
  File "/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_gtk3agg.py", line 69, in on_draw_event
    buf, cairo.FORMAT_ARGB32, width, height)
NotImplementedError: Surface.create_for_data: Not Implemented yet.
/usr/local/lib/python3.4/dist-packages/matplotlib/backends/backend_gtk3.py:215: Warning: Source ID 7 was not found when attempting to remove it
  GLib.source_remove(self._idle_event_id)

和一个没有白色画布的空图:

and an empty figure without white canvas:

怎么了?我该如何解决?

What is wrong? How can I fix it?

推荐答案

如您所见:

"The Gtk3Agg backend is known to not work on Python 3.x with pycairo."

所以建议是:

And so the suggestion presented is:

Try installing cairocffi.

cairocffi安装指南>非常简单.如果满足依赖关系¹，则很简单:

pip install cairocffi

<小时>

^{1) Python 3.x 应该 的依存关系在逻辑上为:}

sudo apt-get install python3-dev
sudo apt-get install libffi-dev

这篇关于使用matplotlib plt.show()不可见图的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！