Pyqtgraph图未在Pycharm中显示

Question

Inside Pycharm（v 2016.1.2），在Ubuntu 15上，当我运行

时

import pyqtgraph as pg
import numpy as np
data = np.random.normal(size=(500,2))
pg.plot(data)

我得到输出

Out[10]: <pyqtgraph.graphicsWindows.PlotWindow at 0x7f61de0c0798>

还有一个空白的窗口。但是，当我从Ubuntu终端运行来自python3 runniing的相同命令时，它运行正常。我还注意到，如果我从终端运行Pycharm，我会收到以下可能/可能不相关的警告

[   7103]  ERROR - napi.project.CacheUpdateRunner - PyCharm 2016.1.2  Build #PY-145.844.6 
[   7103]  ERROR - napi.project.CacheUpdateRunner - JDK: 1.8.0_76-release 
[   7104]  ERROR - napi.project.CacheUpdateRunner - VM: OpenJDK 64-Bit Server VM 
[   7104]  ERROR - napi.project.CacheUpdateRunner - Vendor: JetBrains s.r.o 
[   7104]  ERROR - napi.project.CacheUpdateRunner - OS: Linux 
[   7104]  ERROR - napi.project.CacheUpdateRunner - Last Action:  
[   8658]   WARN - napi.components.ServiceManager - com.jetbrains.python.console.PythonConsoleRunnerFactory requested as a service, but it is a component - convert it to a service or change call to ApplicationManager.getApplication().getComponent(). I would really like to keep using Pycharm, so if anyone has a remedy please let me know. Thanks.