ubuntu16.04 python2.7环境下使用matplotlib不能画图

Question

刚安装了matplotlib，试了下下面几行代码，但不能画图，请问该怎么解决呢？

>>> import matplotlib.pyplot as plt 
>>> plt.bar(left = (0,1),height = (1,0.5))
<Container object of 2 artists>
>>> plt.show()

(.:14956): GLib-GIO-CRITICAL **: g_dbus_connection_register_object: assertion 'G_IS_DBUS_CONNECTION (connection)' failed

(.:14956): GLib-GIO-CRITICAL **: g_dbus_connection_register_object: assertion 'G_IS_DBUS_CONNECTION (connection)' failed

(.:14956): GLib-GIO-CRITICAL **: g_dbus_connection_get_unique_name: assertion 'G_IS_DBUS_CONNECTION (connection)' failed
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/matplotlib/backends/backend_gtk3.py", line 339, in idle_draw
    self.draw()
  File "/usr/local/lib/python2.7/dist-packages/matplotlib/backends/backend_gtk3.py", line 332, in draw
    self.get_property("window").process_updates (False)
TypeError: Couldn't find foreign struct converter for 'cairo.Context'

Answer 1

import那句没有报错说明包安装好了，查一下plot.bar函数的具体参数和用法吧，感觉是调用出错了。