python - PyCharm 和 ipython 的组合无法导入 qt5 或 Qt5Agg

Question

我已经通过 conda 安装了 elementary os 和 Pycharm 以及整个 python 堆栈，现在在 ipython session 中启动交互式 matplotlib 时遇到问题。

这是 pycharm 的 ipython session :

/home/foo/.conda/envs/myenv3/bin/python3.5 /opt/pycharm-2016.2.3/helpers/pydev/pydevconsole.py 41070 33134
Python 3.5.2 |Continuum Analytics, Inc.| (default, Jul  2 2016, 17:53:06) 
Type "copyright", "credits" or "license" for more information.

IPython 5.0.0 -- An enhanced Interactive Python.
?         -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help      -> Python's own help system.
object?   -> Details about 'object', use 'object??' for extra details.
PyDev console: using IPython 5.0.0

import sys; print('Python %s on %s' % (sys.version, sys.platform))

Python 3.5.2 |Continuum Analytics, Inc.| (default, Jul  2 2016, 17:53:06) 
[GCC 4.4.7 20120313 (Red Hat 4.4.7-1)] on linux

下面是如果我尝试导入 pyplot 会发生什么:

In[4]: import matplotlib.pyplot as plt
Traceback (most recent call last):
  File "/opt/pycharm-2016.2.3/helpers/pydev/pydev_ipython/inputhook.py", line 502, in enable_gui
    gui_hook = guis[gui]
KeyError: 'qt5'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/opt/pycharm-2016.2.3/helpers/pydev/_pydev_bundle/pydev_ipython_console_011.py", line 123, in enable_gui
    return real_enable_gui(gui, app)
  File "/opt/pycharm-2016.2.3/helpers/pydev/pydev_ipython/inputhook.py", line 508, in enable_gui
    raise ValueError(e)
ValueError: Invalid GUI request 'qt5', valid ones are:dict_keys(['gtk3', 'wx', 'qt', 'osx', 'pyglet', 'glut', 'tk', 'gtk', 'none', 'qt4'])

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/foo/.conda/envs/myenv3/lib/python3.5/site-packages/IPython/core/interactiveshell.py", line 2869, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-4-eff513f636fd>", line 1, in <module>
    import matplotlib.pyplot as plt

• 此问题仅在安装了 ipython 时发生。 但是，当我不选择 ipython 时，我只会在 plt.figure() 时看到无响应的黑屏。
• 当我从终端(在 pycharm 之外)手动启动 ipython 时，不会发生此问题。此外，如果我在导入 pyplot 之前执行 matplotlib.use('Qt5Agg')，错误仍然存​​在于 pycharm 中，但不会出现在我终端的 ipython 控制台中。
• 按照 conda create -n test python=3.5 在新的 conda 环境中安装； conda install ipython matplotlib scipy -n test 并在 pycharm 中加载新环境没有帮助
• 重新安装 pycharm 2.3 或使缓存无效 + 重新启动没有帮助
• 安装pycharm educational 3.0没有帮助

我怎样才能让它工作？

Answer 1

Pycharm 似乎不完全支持qt5，问题是open .降级它是最快的解决方法。

使用 conda，以下将执行降级到上一个稳定版本:

conda install pyqt=4.11.4